Document YqpBwJMGr2Y594Kb35y2aZyV

U PONT MAGAZIN II Its ill CONCENTRATED PATTERNS . . . . the difference between clean breaks and chipped targets Burnside Laboratory standard pattern circles--diameter inner circle 10 inches; outer circle 30 inches DU PONT MX REG. U. S. PAT. OFF. SMOKELESS SHOTGUN POWDER (multi-base) GOOD, healthy, smashing A break--when all you see is a disappearing puff of dust -- who doesn't know the immense satisfac tion of getting results like that? A chipped target--with the edge just barely bitten into--well, such hits are marked up on the "good" side, but what shooter really likes them? The difference between good and bad breaks lies in the pattern of the trap load. Only a powder which distributes shot uniformly . . which provides concentrated pattern . . can blow clay targets into dust. DU PONT MX makes such a trap load. One of its chief advan tages is "concentrated patterns." It is an advantage that shooters recognize as soon as they begin to shoot DU PONT MX. There are other advantages, of course. DU PONT MX leaves the gun barrel clean. It is unaffected by weather. Because of its balanced recoil, it is easy on the shoulder. Specify DU PONT MX in your trap loads this year. It is a better powder. REG. u. S. PAT.OFF. Voi.. XXVIII THE DU PONT MAGAZINE M AY, 1934 No. 5 The Lafayette Centenary We do well to honor the memory of a tried anc true fr end of the American people Tim, event tel career ot Marquis de Labi vci.te, great friend of flic Amer ican pcopie, j s brought frcshlv to mind this month because Muv 20ih marks the 100th anniversary of his death. Soldier, statesman, valiant crusader for liberty, Ins .services to the United States and to France were ol a kind to earn the everlasting gnuiuuie of both nations. His interest in democratic institu tions became apparent when he was onlv nineteen vears old. On learning iliar the American colonists were fighting Ur independence, he resolved to go to titeir aid. He outfitted a ship at his own expense and with a group of companions prepared to leave Ins homeland. Friends fried vainly to dissuade him: even the King forbade rhe trip, hue Lafavertc in disguise escaped arrest, sailed from a Spanish port, and after a six weeks' vov.tge Li tided near Georgetown, South Carolina in June, J7?7. 11c offered his services to Congress, enlisting as a volunteer without pay. In August of that vear he was made a member of George Washington's staff. Thus began a life-long friendship that profuimd.lv mllueiiced his career. The brilliant M a rail is proved his metric at rhe Bailie of cite Brandy wine, where he was wounded, and after a six weeks' convalescence he icjoined (he itmiv, dciuonstialcd his leadership and was made a major general - He remained with Washing ton during the fateful winter at Valley Forge, fought with valor an Monmouth and was an active leader in the field during J77S. bnrlv in 1779, he reentered military service in France, hut returned the following spring with men, ships and supplies. Then, a Iter, he com manded a division of troops and served continuously until Cornwallis surrendered at Yorktown. Lafaveuc's part was praised in public by his beloved commamler-in-chid, and with good reason, for the voting man had contributed, not only his services but also about $1 50,OH) to the cause. He returned to France late in 1781, Fur visited the United Stales in 1784 as a guest of rhe nation. Within rite next live wars lie was destined ro fight again for freedom in his home land. During the French Revolution he was most active and influential, at one time controlling the destiny of the nation. Nevertheless, the rime came when he was forced to flee to Flanders to avoid the guillotine He was captured hv the A.usi nans and held in prison from 1791 ro 1797 when Napoleon secured his release, M:ter several years of reiirenicm he again became inllucnrial in French politics. In J824. lie revisited the United States and was overwhelmed with honors. Congress voted him the sum of $200,000 and a township of land lor his services i o rhe nation. General Laiavcne was a personal friend of du Pont do .Nemours, and ol Ins i wo sons. Yicuu was one ol Ins aides lot a time d uriug (he French Revolution, and F.. 1 du Punt was a member of the National Guard. It was therefore quite natural filar Gen era! Lafayette should visit the familv. In October, 1824, he attended the wedding of Victor du Posit s son ai New Castle, Delaware, and in June, the Inflowing war, he was an overnight guesi at IL 1. du Punt's home. On that occasion he wrote in Fleurhera du Pom's allium: "Allcr having m.:c ii Hemp a KiH Criuiirv aijo, the h.ntks ol ihc Brandy wine a scene nf Moodv tight ini?- I am huf'jw to hud it now Use seal ot mJu>- trs, hcuuv and mutual !rieful>ht|W The following day he visited the old ha it leiseld at Cliadds Ford. . i ahfhilhj m, fKiy The DU PONT Magazine One of the many scenic places along the new Trail Ridge Road. Note the rounded bank is prevent undermining and sloughing Another Ute Trail Is Rejuvenated Indians alone once viewed the scenic wonders of Rocky Mountain National Park/ but now any motorist can see them from the NewTrail Ridge Road, built at a cost of $1,250,000 By IVAN HOUR TT in. old Ure Trail in Rocky Moim rain National Park, north central Colorado, is again hustling with activity. Hut this time die sounds that penetrate the forests of hr and spruce are the hum of the motor car and the honking oi die automobile horn, rather than die trend of the moccasin. The narrow path of the earlv Ute has been convened into a. well built automobile highway. The New Trail Ridge Road. 'The old one, which follows the summit of Trail Ridge from the grassy meadows west of die village of Kstcs Park ro rhe head waters of Colorado River, just across the Continental Divide, has been lying practically donmni. lor nearly a hundred rears. Many, many suns ago the Ute Indians occupied practically all the mountainous areas of die Slate, including the four hundred square miles now within the boundaries of this national park, which is about seventy-five miles northwest of Dem cr. At that time ilieUtes hunted and fished along the streams west of Estes Park, along the headwaters of Colorado River near the Never Sum mer Range, and along the shores of Grand Lake. In those balmy clays of old die Ure Trail felt the footfall of many an Indian pony as the painted braves and their trusty squaws traveled back and forth across the Continental Divide. But those da vs were not to last. The Chcvcnnc and Arapahoe tribes, which lived on rhe plains east of the From Range, joined forces, invaded the tires in tire Estes Park and Grand Lake regions, and drove them many miles to the west. Since then rhe old trail has been but little used. It lias been lying in wail, as it were, for the gasoline braves of today. Early histories of Colorado fail to show when the Lite Indians moved out of rhe mountain wrritory now included in Rocky Mounrain National Park; or whether the Cheyennes and Arapahoes remained there long after defeating the Utes. However, avail able records do show that no appre ciahle numbers of Indians have Jived Page Two A The DU PONT Magazine A typical view of construction work along the new Trail Mdse Head in Rocky Mountain National Park on the eastern slopes of t he mountains, since Joel Estes and his wife settled near the site of Fsres Park village in i860, or on the western slopes, along die headwaters of Colorado River, since Joseph Wesrcoct built hiscahin on the west shore of Grand Lake in 1857- Oid pioneers of the Grand Lake region ndl an interest iog legend regarding the abandonment of that section of the Rocky Mountains bv the l're Indians. As rhestory goes, the Arn pa hoes and Cheyennes attacked the L'fcs early one morning, while they weie camped on the shores of die lake- The Ure braves put i hair squaws and papooses on a ralr and sent them into the middle of the lake lor safety; but a strong wind came down from dieinouiuams, overturned the raft, and all on board wore* drowned. In the meantime, about diree hundred Ute warriors were killed by the attacking party. As a result of this unfavorable treatment by the gods of war and weather, die surv i vors of the defeated tribe concluded that the Great Spirit was angry with them. Consequently, they starred a superstitious tradition about d e place which has been handed down from generation to generation to this very dav The legend may or may nut be true. Nevertheless, the Ute tribes have f t > avoided the park countrv since the first white man entered the valley. The Indians, during the period of their occupancy, had some ini crest ing and appropriate names for the more: prominent topographic fealures of the region. For instance, Long's Peak and Mount Meeker, die highest peaks, which rower to elevations of J 4,2.53 and 13,911 leet above sea level, res pec lively, were called "The Two Guides." They are located in the southeast corner of the park and arc visible for long distances east of die Front Range as well as from nearly all the higher sections of the sur rounding country. The valley in which Estes Park village is located was known as "The Circle,'' since it is surrounded by a ring of high moun tains. The valley of die North Fork of die Colorado River, lying between the Continental Divide on tile east, and die Never Summer Range on the west, was called "Plenry-Jerkcd-F.Ile Meat." Spec imen Moumain was known as `'Mountain Smokes;" Old Man Mountain as "Sirung Man;" LiJv Mountain as "Benner Lodge Mountain;" and Thatchtop Moun tain, I oca ted just east of the Con tinental Divide, as "Where die Buf falo Went lip.'' The story about Thatchtop Moun tain is i hat a band of A rapahoes came into the park early one spring and saw a number of black specks high on its flattened sum mil. Climbing up die snow-clad slopes they found a herd of huiialoes that had evidently been grazing on the moumain side late the preceding fall and !i,;J been hemmed in by a hca\o stum so that dice had to spend the winter there. Rocky Mountain National Park can be reached hv four automobile routes, three from the eastern slopes of tlie Front Range and one from the western slope ol the Condnciin.l Divide. State Highway No. 16, run ning in a northerly direction from Granin', Hikes the motorist into the park hv way of Grand Lake, Milner Pass, and Fall River Pass. This is the western entrance. From the east the motorist can reach the park by the 1kg Thompson 1 iflt.-Hf-' J J..- Page Three Timber grillages were used to protect scenic cliff formations during the construction period. If ail highway builders would follow the tamo piacticE, many a beauty spot could be preserved along our public roads he DU PONT Magazine. 7he Technical Laboratory of the da Pont Company ai Deepwater Paint, New Jersey, where dye stuffs arc tested under plant operating conditions for fastness and other properties Fast and Fugitive Colors Some facts and figures furnish a background for pertinent information about dyestuffs and fast-color guarantees. , , By GEORGE H. JOHNSON Director of Research, American Institute of Laundering L is unfortunate that: the American consume' often still thinks that domestic dyestuffs arc interior in qualirv to those formerly imported from Germany. This belief unfortunatel v was strengthened more or less hv experiences that occurred, CM-ecuJh during the World War. Ai that time many color troubles were encountered. Stockings, shirtings, ginghams and percales often faded after a short period of wear or a few washings. The pit bite, today, is not aware rhar m -914 the lTmtcd States was producing onlv about ecu per cenr of rhe dvesrufls uceecd hv American industries. When war came ninety per cent of the available color supply was cut ofi at: once. In an attempt to cope with the situation, dyestuffs that had been abandoned for rears in favor of faster colors were taken from warehouses and mill storerooms and used. Even colors originally imnulacrured for the tinting of paper were sold to textile mills. In other words, they were used for the purposes lor which thev were never intended. The very colors the public condemned as being cheap, inferior, American-made dyestuffs in many cases actually came from Germany. Another point should not he over looked. Each organic dyestuff is a definite chemical possessing certain properties of its own. Wool Red B mace in the United States, for example, is the same as Won] Reel B made in Germany. True, heir names may be entirely different, hut a name makes a dyestuff neither better nor worse. Germany, as well as the United Stares, produces fugitive colors, public opinion to the con trary notwithstanding. The United Page Four States, as well as German}', manu factures fast colors. Indigo, for example, is produced in this country in tremendous quant ities, and it is just as fast as the product imported from overseas before the war. Where as in 1917, only 774,771 pounds of indigo were produced in the United Suites, 24,326,-403 pounds were manu factured in 1930. When the British blockade pre vented rhe importation of German dvesrufls, makeshifts had to be employed in American industry. This again often caused misunderstanding among consumers. Those dyestuffs that were comparatively simple to make were manufactured at first to help meet the immediate demand. Meanwhile, research was carried on feverishly in an endeavor to produce faster colors. Additional capital was invested and new enterprises The DU PONT Magazine were launched. As crudes and inter mediates became more and more plentiful, greater progress was made. As soon as a faster dyestuff was produced successfully on a com mercial scale, ir was placed on the market to replace a more fugitive color. This pntciice lias mnrinued until in 1930 the United States 11. UNITED St at u s Dvraxuvr PiumrcTioN r.v i.j.AiHhs11 Tvpe Acid........................................ ..................... Basic......................................... ..................... Direct. ...................................... ........... Lake and spirit-soluble ... .................. Mordant and chrome.......... ..................... Sulfur................... .................... ..................... Quantify Produced in Pounds 1928 1929 1930 J 3,469. >97 14.196,515 11,457,235 3.374.099 5,699,970 4,644,694 19,533,095 21,622,907 17,513,462 1,$21,492 2,724,712 2.560.936 4,403.934 4,k6,22d 3,137,164 19,001,910 22,605,799 14,232,076 supplied ninery-four per cent of the V.irs ^including Indigo). . . ..................... 32,375,$! 2 38,784,337 32,304,11X1 dyes actually consumed in America. In add ition, more than 28,000,000 pounds of dyestutis were prod need T' Ird:`;o....................... ..................... T ' Orher vats ............ .... ...... Unclassified and qvcial .... ..................... 25,351,650 6.>14,! 32 >45.412 29,320.270 9,464,067 740,737 24,326,403 7,977,407 564.929 for export. This growth is phenom Terr,u., , . ... . . . 96.625,451 111,421,50$ 86,480JXK) enal, consideiing that in 1913 there were only seven small firms in exis tence in the United States, producing Table prepared originaliy bv t'di.-mical Diid V, S Bmva n oi Fotvigr Dmrcsik Comma or. about ten per cent of the dvcsmhs needed by l he paper, textile, ink, paint and leather trades, and for rhe most part these were made from intermediates that had been im ported. Table T shows the dycstufl pro duction of the United States for certain years between 19.17 and 1930 in comparison with 1914 when rhe hulk of rhe coloring matter used in this country was imported. The outstanding feature of the rcccnr dyestuff oiupiu of domestic manufacturers is the increased quan tities of reduction vat and oilier fast dyestuffs rhar are being placed on the market. This Increase in con sumption of the faster colors is indicative of the fact that the public is interested in fast colors and is willing :o pay for the slightly in creased cost of garments that have been dyed or printed with consumersatisfying colors. Up to the period of the depression, the amount, of vat dyestuffs consumed ini reused each year. It is to he hoped ihat converters, dyers and primers will not run the risk of destroying con sumer confidence in "guaranteed fast colors' by reverting to rhe use of cheaper and often-rimes more fugitive colors tn an eilort to lower dyeing costs. Table 11 gives the domestic pro duction of dvesuiffs by classes and, in addition, shows the import of dyestuffs for consumption. The pounds of dyestuffs imported and their value follow: Year 1929..... .... S 930 . . . J931 9 month> Pounds .. .7,116.605 . 4,939,676 . ..3,975,021 Value $8,154,435 5,246,616 4.3SM50 The domestic consumption of vat colors other than indigo, during recent years. is as follows: Year Pounds consumed 1914 1.945.304 1926 . ..............4,660.449 1927 . ................. 6,650.422 1 yds ............... 6,055.650 1929.. . . .. .. . 10,813,948 hese dal a refute the ofren-h assertion that colors "used to be better,'' for the .1929 consumption of fas; vat colors is many times i he amount used in 1914, when pnu finally all dyestuffs were being imported. After all, fastness depends cm rhe colors chosen for use hv the dyer ami primer. This choice, inci dentally, is somewhat dependent upint the price that is being paid for coloring and limshing. The dyestuffs manufacturer has liule to do with the choice of colors. All he can do is to produce colors lor w hich there is a demand and at the same rime foster the use of better colors. The misrepresentation of fugitive color* as "last" cannot he laid at the door of the American dyestuif manu facturer any more than ir can be placed upon rhe shoulders of laundry owners and dry-cleaners. Color fastness is governed largely by ihe properties of the Jyesiu.ls that are used and by the method oi application. Wn a t is Tin- Ou l o k Sit u a t io n ? It mav he said chat the presenr interest in fast colors has resulted chief ly from consumer demands. House w t \ es ha vc I argely become color coliseums. Just as tbc\ are no longer conrcnr ro wear con on hose ... they prefer i a von and silk... sochev are demanding fast colors. This is shown by the returns of a nation wide questionnaire directed to women by the oW I io/firkti /vg Institute- In a preliminary survey combined as long ago as J92(\ it was reported that more than eight) J. 1 *1 | i.H S f.S i %'S I >W-s 1U> i I'SOPIV noNT per cent of women purchasers were asking retailors tor fast colors. Al Yv.,* 1914... 1917--. I91H... 1927... 1928... 1929 . . 1930. .. Number of firms ............ 7.......... ............ 18 . ... ...........78 ..... 55.......... .....53........... ............ 54........... Pi Hinds l)S Jsasmds. produced Value Aseivye prac per pound . . 6,619,729. . . ............ $ 3,470,096.... .............SO. 37 ... 45,977.246..., ...... . >7,796.226.... .............. 106 . . . . 58.-164,446. . . . .............. 62.026.35X1.... ............ 1.08 ........ 95,167,905.... ............... 37,115,483.... ............ 0. 39 ........ 96.625,451 .............. 40,582.589 ... .. .... 0.42 .. .111.421,505 ., . .............. 47,909,247. .. .......... CM3 ... 86,480.000.. . though in nsanv cases i he colors sold as fast: had faded, only about two per cent of the total number of consumers reported that they re turned the fabrics to tilt point of purchase, in the 1928 survey, neailv thirty per cent re purred asking ki nd jus; incur when so-called " guar- Ba sed T.irilV Conn reports Page Five IJ.'-i,-h : p.-:y The DU PONT Alcigazine Keep the Cobwebs Off Your Guns New sports furnish rifle shooters with open-season thrills as moving targets representing large and small game come into view on the range . . . By C. B, LISTER Sec y-Treas., National Rifle Association one would consider buying an automobile, even an inexpensive, second-hand car, driving it once and then all owing it to accumulate dust and rust in a garage. There would he too much pleasure taking the car out frequently and driving it, and too much of an investment involved to allow ir to go unused. It is strange how many gun owners have as ranch money tied up in guns as thev would invest in a low-priccd car, and yet these guns are permitted to stand for the greater part of each year in a closet or gun cabinet, collect ing dust and perhaps rust. Why are they nor used regularly, so that the owner can collect the full dividends of recreation and good fellowship ro which his investment enrides him? The inrreduction ol Sheer has shown thousands of shotgun owners how to enjov their guns throughout the year just as much as they enjoy them durng the open season for ducks and upland birds and game. Until reccnrhy rifle and pistol owners, men who bought their guns primarily for hunting purposes, have not had any sport, other than shooting at station ary paper targets, to keep their guns in use to advantage the year round. There has been a definite impression among sportsmen that rifle and pistol target shooting was a rather dull, uninreresring pastime because of the employment of these stationary bull'seye targets. This situation has already been partially changed and will prob ably be emirelv changed during the 193-1 outdoor shouting season. For the benefit of the owner of the .22 caliber Jiglu burning rifle, Gufort has been introduced, using silhouettes of crows, gophers and similar vermin. These targets appear at ranges vary ing from twenty to fifty yards out of the grass or brush and a re i m med iardy knocked down when hit. The targets arc operated from a central trap behind the firing line, and many ol the ele ments of sraall-gamc shooting in the field are well simulated. The muzzle heavy .22 caliber target rifles are not so wdl adapted to this snap-shooting sport as the light hunfing-tvpc riiles, so that thousands of owners of the light-weight .22'$ now have an opportunity to get out into a held during the long summer evenings or over the week-ends and shoot to their hearts' content. Gofort, like Skeet, while provid ing many of the interesting angles of actual field shooting, also adds the benefits of organized competition. In addition to disappearing targets, it is expected that rapidly-moving ones simulating rabbits or weasels scoot ing through the grass will also be added to the Gufort range set-up during the next few months. The cobwebs appear likely to be brushed off many a .22 caliber hunt ing rifle this year, and investments of ten to thirty dollars will begin paying dividends to their owners. The need of a similar form of sport for owners of high-powered hunting rifles becomes even more apparent with the development of Gofort. The problem seems so comparatively easy that we wonder why ir was not solved long ago. We may visualize a hunting range as one that will include a run ning-deer target, two or three risingbear targets and perhaps a charging bear. All these ideas have been put into successful practice as individual units of equipment installed by va- ffiffce ... Shooting Gofort in a typical woods setting. Note the target-operating aguipment cod the use of light rifles Below ----- A turkey target med by a Massachusetts Rifle Club in one af its interesting matches Below ... This rabbit target is station ary, but it takes a good shot to score a "ten," Thu high numbers, of course, indicates the most vital areas corre sponding to the smaller rings of the conventional bull's-eye Page Six The DU PONT Magazine turns rifle clubs for many years past. Various kinds of running deer tar gets, operated in as many dillerent ways as the ingenuity of club officers could devise, are to he found in almost every locality where the rifle dub members are deer shooters. In other dubs we fitul rising bear targets pop ping out from behind trees or bounc ing up from behind Jogs and operated by all manner of mechanisms and manual labor. In one or two cases clubs have devised a charging bear or other animal that runs straight at the shooter until a metal plate sus pended behind the target is struck by a bullet. The shock of impact is sufficient to halt the career of the "animal." But in no case have all these ideas been incorporated on one range, and there is no standard equipment avail able nor any standard set: of rules and regulations to turn this rather hap hazard form of target practice into a competitive game. The Ni\ tional Rifle Association now has a standardized fonu of ruiniingdeer equipment under test and will supplement this with rising bear, and it is ro be hoped that some kind of a 'charging'target can alsobedesigned with rarget carriers and operating equipment that will be safe enough and rugged enough to meet the re quirements or the Association. However, a local shooting dub need not wait for official specnica- turns for a range of this kind. In every sportsmen's dub there is usually some individual with a special ralenf ior making such contraptions work. Running-deer targets can he oper ated with garage-door hangers from an overhead track or by suspending the target from ordinary pulley wheels strung from an overhead cable, or rhey can be run on a wooden or wellpacked cinder track, using a carriage mounted on discarded bicycle wheels. In some clubs the "deer" is even mounted on the end of a rake handle, and each shooter takes his turn in running the length of the target pit, carrying the deer in flic air over his head! Al ter a few such trips, when the shooter goes to the firing line, he is in much the same condition for a quick shot as he would be if he had scrambled up and down a hrusheo'ered mountain for three or four hours looking lor a deer! The primary essential of a runningdeer range, of: course, is adequate pro tection for the men who operate the drive pulleys or who carry (he 'deer" over their heads. If the operator is nor I oca tee! in a pit, he should he behind a barricade of ar least six feet of a wdl-senled dry earth. left -- A Cofort gaphar target exposed, but the sportsman must shoot quickly, for it drops down out of sight in fust the seconds Right -- A "running-deer** target in action an the American Legion and Civilian Con Cktb rang* of Sfftflherx, Ohio A rising-bear range calls merely for a pair of stout hinges firmly fastened to a "dead linin'' well anchored in the ground behind a log or in a clump of bushes. The hear is cut from a piece of builders hoard in such size and shape as meets the fancy of the local shooters. It is jerked up into position with a piece of sash cord by someone standing behind the shooter at the imiig point. The ranges where this kind of shooting is clone can depend entirely on the ability and equipment oi the local marksmen. The olhciaJ runmng-deer range, when rules are finally issued by the National Rifle Association, will un doubtedly he 100 yards, and (he deer will travel aiross an exposed space of a hum ?3 yards in perhaps live or six seconds. The rising-bear targets will probably he placed ar ranges of 70 to J25 yards and will he exposed to- :i period o( three to five seconds. (Crwfinin'J on /A <4f Comp Perry, Ohio, policemen are trained to shoot straight. This view shows a running-man target Note particularly the cables and the running-track line Page Seven Poor illumination is poor basinets. Counties* plant surveys show that inadequate lighting is responsible for accidents, waste and spoilage/ that it encourages employee inefficiency and results in excessive production costs The DU PONT Magazine IxnnsTRY- rod ay h just awakening ro ilie vast importance of better light as a production aid and as a morale builder for workers. Alter surveying 1,907 industrial plants, the Edison Electric Institute found that: die average intensity of light in these factories was only 2.85 foot-candles -.. hardly enough for casual seeing, let alone careful work manship. That scans meager indeed when you consider that near a win dow in rile davriine 2(X) foot-candles are commonly recorded. Outdoors in the shade 1,000 foot-candles are registered. Some industries have made notable strides in improving lighting condi nous. The textile group, the leather goods industry, die printing and paper trades and some branches ol the food industry are notable examples, industry as a whole, however, seems slow to realize char better illumina tion means increased efficiency, impro ved prod tic t ion, fewer acciden t:s and hanpier workers. The el feet of proper dhimi nation on production is so positive it is a wonder that there are any dark places left in i iJusu v. Poor fight nets workers under a strain: fatigue sets i/.TUt-'e-.y W'Kfll NO-OUSE EUECTK-G & M* <1. CO, Better Light Better Sight The high cost of poor lighting comes out of profits. Better lighting pays dividends By DONALD BAUDER in sooner. Joss from "rejects" is ex cessive, fewer units are produced. On the other hand, improved illumi nation speeds up production, reduces work hazards, results in lower costs all around. In most factories today, production heads are proud of their low-accident records. Wonderful strides have been made in improving conditions, yet :oo many injured workers say, "J didn't know I was so close," or "i couldn't we what I was doing." Good light is good insurance against accidents. This ingenious device, used for making illumination surveys, measures light intensity in various parts of the plant Well-lighted pi a !i ts arc kept c lea net. In the dull, dingy factory, workers grow careless, tools ate not relumed to their proper places, waste is thrown on the floors, dark corners fill with refuse. Bur dirt does not fir into a brightly-lighted plant; it is too evident. The well lighted factory nor only looks cleaner it's bound to be cfcaner. The workers in a properly lighted plant are more apt to he happy work ers. Eyes are essential tools. When prior lighting dulls their edge, the worker suiters -- the manufacturer suffers. Proper illumination means less energy expended for a given piece of work. Contented workers are an employee's best capital. '4 Betrvr Light--Better Sight' ' arc ef ficiency companions. They mean dol lars earned by increased production. Pace Eight The DU PONT Magazine Good lighting is good business. This is the same factory interior illustrated on the opposite page, but shown here after it hod been give* the "'sunlight treatment*" with Mill White finish. No mare hght enters the windows, yet the difference is strikingly apparent Paint for Better Light Du Pont recommends "Dulux^ Mill White tho mill white that stays whiter--for better light today and for years to come Bk w a k k nf walls and ceilings that have giown dark and dingy! They are the sneak-thieves dial steal light the precious kilowatts dial you have intended to aim inro increased production. Walls coated with "factory film" absorb up to sixty per cent of the light that strikes them. And worst of all, this film gathers so slowly, so sh'Jy, that you hardly realm: you arc: being robbed. Whtte paint is lighring's greatest aid. Once paint was considered merely as decoration. Tod ay, it is considered a definite part of a factory's lighting eq utpment. White-painted walls rellea the maximum of light, liven in brightlylighted areas, reflected light plays an important pari m giving a more even distribution of illumination and in eliminating glare. Workers sex more death when ilieii woik is e\en!v illuminated; strong ligh ts cause glare with resulting eye strain and fatigue. Were it not for reflected light, objects not directly lighted could not be seen at all. White-painted walls and ceil ings help to "round out" the lighting of any room. The requirements placed on white paint by indusrrv are particularly severe. The industrial engineer says, "1 want the whitest, finish that can be made. Mote titan that, I want a finish that will stay white. The mill white I choose must give me be tier 1 ighting, better appearance, better pinuxtioig at lower cost." Th at's a large order. J( means "Dulux** Mill White con be applied by brush or spray. It dries quickly gets painters out of the way in a hurry superiority in original whiteness. In durability, ease of application, hiding jxnver, coverage, gloss, and resistance todirr and hard wear. With these requirements in mind, du Pon r chemists developed "Dubix," the new Mill white that stays whiter. The unusual profxinies of this finish are due to the use of an entirely new vehicle "Dulux** vehicle - and a totally different combination of millwhite pigments. Because it is whiter, "Dulux'' reflects more light at the start; ir has given a new meaning to the word white. In addition, "Dulux" actu ally stars whiter. It resists the ele ments which tend to yd I ow ordinary mill whites. It gives maximum light reflection not only at the beginning, but throughout its long hie. And. because a dries to a hard, smooth, tile-like surface, free of brush marks, ii Slavs cleaner, gh mg Huh: footage t o dust panicles. As might be expected of a finish Inning all these qualities, "Dulux" cuts maintenance costs. It can be washed repeatedly without injury. It stands unusual abuse. Fewer paint ings are necessary. And that is true economy. To the industrial executive who is alert to the dollars and-cents value of proper lighting, the du Pont Conipanv commends wirhour reservation this new factory finish. "Dulux" Mill White is offered in Gloss, Egg shell, and Mai Undercoater lor every interior need - Paqs Nine The DU PONT Magazine COUisr.-T Nr.A > UiVKl- Carrying a River Across Mountains and Deserts Miles of du Pent "Ventube" are being used to supply fresh air for drillers on the record-breaking tunneling jobs of the Colorado River Aqueduct By J. L. LOVELL Jn one of rbc greatest engineering undertakings of aJJ time, part of the Mow of the Colorado River is being diverted to Cajalco Reservoir, near Los Angeles, 241 miles away. From its intake near Parker, Arizona, more than 100 miles below Boulder Dam, the aqueduct threads Ls way across the great tleserr and the mountain eounirv of Southern California to the storage basin at R i versIde, from which poi n t the water will he distributed. Mountains have to he pierced, canvons bridged, Tein- toft--The Sort Jocinto Tunnel h hems constructed by Wenzel & Henoch Construction Company. Left to right, Walter Hart, chiefengineer/ Walter Hoettccke, general superintendent, and Otto Seefcld, general manager Below Site of Parker Dam, the Intake for the Colorado River Aqueduct. The view leaks upstream with Arizona on therighl and California on the left. Note the diamond drill boats an the river perarurcs as high as 140 degrees in the sun are encountered. All of man's building science has been called into play to bring this gigantic undertak ing speedily to a finish. The entire project will cost S220,lXX),(XX). This will provide not only for the building of the 241 mile feed aqueduct but for the construction of the additional 210 miles of dis tributing aqueducts that will serve the thirteen cities comprising the Metropolitan Witter District of South ern California. The construction work necessary for providing communications, water and power before a single tunnel could he started represents a major construc tion job in itself. The District built 175 miles of oil-surfaced road at a. cost of more than $1,000,000. These were primary routes only, and the seventeen successful contractors for the tunnel driving had to construct many additional roads before they could begin rheir work, A water supply .system costing $70(),0(X) was established to serve 2(X) miles of the aqueduct route. Almost 450 miles of high voltage transmission line lias Pc iq h Tan The DU PONT Magazine been erected to carry power inro the construction camps. More chan 330 miles of telephone and telegraph lines were installed in extending communi cation facilities to every camp. Along the line of the aqueduct will he sixty-li ve miles of lined canal across deserts, fifty-six miles of covered con duit, and appruximatelv ninety-one miles of si x tecn-fi >ot d i a meter tunnels, made up of twenty-nine individual bores through the mountains. Tunnel ing presents the greatest difficulties on this job, which lias been termed die must: extensive tunneling under faking ever attempted on am' engi neering project. The tunnels range in length, from 323 feet to eighteen miles, and have to be driven through all types of rock and soil, at greatly vary ing depths. The thirteen-mile San Jacinto tunnel, in which the two shafts are 44,000 feet apart, represents one of the longest boring jobs in history. It has, dierefore, become the tunnel laboratory of the world. New meth ods and new equipment have been left1--Capper Botin Ttrnfttf Adit, with 15-h.p, lowpressure Buffalo blowers exhausting the ofr from each heading through 22-inch steel pipes. Walsh Construction Company Right...Whipple Mountain Tunnel, showing the du Pant system af ventilation as used on all the Walsh work. Five-h.p. blowers force fresh air to the heading through 20-inch "Ventube/' and the jmofee is picked up some 500 feel bock by the metal fine and carried off ta the portal This rough sketch illustrates the du Pont system of tunnel ventilation. As the work advances, both blowers are moved up every 700 to 1000 Feet and set up at a safe distance back ham the face. Note the constant one-way flow of air and the short section to he venti lated, With motors developing a total of 20-h,p,, one mile af largc-diometor tunnel may bo ventilated efficiently Below... The first ventilation of the Copper Basin Tunnel, with a IQ-h.p. low-pressure Buffalo blower delivering fresh air through 20-inch tr Ventubc." Walsh Construction Company Right... In the Bernasconi Tunnel, where 20-inch du Pont "Verduha** conducts the much-needed fresh air to the men working at the heading. The line is carried high in order to pass the King "grasshopper" at the face, Hamilton & Gleason Company given opportunities to prove their worth, while equipment with estab lished records of performance has of course been awardee, its share oi the job. One of the most imporranr tasks in the driving oi tunnels is to insure f he men at the working faces an ample supply oi fresh air. Du Pont "Vcntuhe" is being used ior ibis purpose in a great many of the individual run nels oil thcColorudo River Aqueduct Con ft actors are finding it an in\.do able aid in pushing their work forward with record speed. Just prior to blast ing, it is removed, and immediately after blasting set up again so that it impinges a stream of fresh air on toe working face, driving away gases and permitting the quick return of tie workers. ((m /My rys Page Eleven Some Familiar Products Appear in a New ^ For identification purposes and as they now go forth to * 6F catch your roving eye when 'nQr6 ARDLY more than a generation ago H manufacturers paid little attention to the packages that carried their factory products to market. If a container protected the goods in transit through the usual trade channels to the consumer's home, what more could anyone expect? Utility was the prime consideration; appearance was secondary. Only in isolated cases did a manufacturer attempt to make his package attractive through the arts of design or decoration. Today, modern packaging is an essential factor in merchandising products of every kind, with special emphasis on display value. Onlv those that are well dressed are given space on the dealers' shelves, which is another way of saying thar art has gained a definiteplace as a sales stimulant. Jn the battle for business the package that combines beauty, utility and convenience is a major sales weapon in merchandising campaigns. We arc assured that eighty-live per cent, of all sales arc made through an appeal to the eye, and that opens the gate wide for packagedesigners to apply their skill in a very broad field. Developing a container for a new prod uct or restyling an old one is not an easy taskIt involves an inn mate knowledge of the product, and the many conditions surrounding manufacture, sale and use. In designing a -onlamer, questions of size, shape, texture, . i liur and the like* have to he considered carelid i \ . But if the work is done expertly, the it Mili is usually a package that wins the i-on.-aiincr's acceptance and patronage. T4l\l ANTI-RUST ANTI-FREEZE Sam. of lk U,e newt Polish for wrrttrreor heeooVvfi 6'..... .t*<*V'. 0 < on old and.rvii; is o new o as the one-foW1** I rw !'ress and Respectfully Bid for Your Attention ses the packages as they were rth to more becomingly attired to ,vheri VtQre seeking products of quality ago i to orv ,:tcd *udc tore tme ary. urer live itial very .1 uc- iven ther nite for ury, pun if of die ' :lSc road r< id' askthe ding ng * rurc, rare' the the Notable strides in package designing have been made during recent years. A wealth of new materials has come into use with a more advanced technique in their application. In niany instances containers not only protect and display merchandise effectively, but are also designed for rouse. Packaging standards generally are moving to higher levels under he pressure of sales com petition. The illustrations show some of the package changes made by the du Pont: Company and Certain of its subsidiaries during the past year. In new dress they reflect the modern trend roward simplicity of design and better display of product names. Unfortunately, the new color effects cannot be reproduced here, but most of these containers are in colors selected for their special appropriateness. Incidentally, some of these units were shown at the American Management Associ ation s Fourth Packaging Exposition, held in March of this rear at I Intel Aster, New \ erk Uity. Hundreds of packages were emend in hc competition and awards were made or Points of merit as Jeici mined by a dts tiuguished body ol judges. Tilt "Armit" Unit, with its noil spillah'e spout, w as at curded second pi ace, and the Aluminum Paint Cani third place in the "tin mutaine:" gmup, "'bile the "No. 7' LHI1N sViJil M( t lit! pi:iLSJ 111 ll* family group." Put th at is aside iiami i:;e presim purpose, "hich is l o show these prod nets u; liiut mote ;lrtractive dress, so that von mat1 fr aid `deiitify them more iv.uliA . I'l ., "-L -AtOMtNUrt >i * nerl n * for * P'turt - , and "f fhickato, an y.galle" r, connwr ii mtr ........ ~..;....... . * 1....;.fjHp..'... | i.-Y Ku-=-'SC mm Ns:, Kr.ss- ; u'. pp The DU PONT Magazine Some Unusual Applications of "Cellophane" Perhaps you know of others equally noteworthy for ingenious people are always finding new uses for this cellulose film . . . By ROLAND H IN TE R M I $T R Rwr place on rhe list of tmnsicil uses of `'Cellophane' we unhesitat ingly award to the an omniums build ers of rhe bird-nest shown in rlie accompanying ilhtsrranon. Wht) knows, possibly e\en the birds have norieed tie modern trend toward transparent wrapping and have de cided to keep some `'Cellophane'' handy tor wrapping their future broods. The nest was recently found near Gotildshoro, Pennsylvania. Out of ;;outlier Pennsylvania town comes rhe news that a beautify] "stained-glass" window decoration was created in die local library by the simple expedient of cementing strips of colored "Cellophane'' to ait ordinary window. Attractive design was achieved through variations of color and by sc para ring the areas with black-painted lines simulating die appearanee of leaded glass. From the held of medicine vve he.ir that an operating mask of moistureproof " Cellophane ' ' is i he latest thing. Doctors claim that masks of this iype are practically germ proof as compared with the on!inary gau/e mask. This cellulose film is also being used as a protective covering for wounds, so that a physician or nurse Pjge Fourteen may look through it and observe the various stages in the healing process without first removing the bandage. Recently a sportsman wrote us a glowing letter about his success with "Cellophane" as a fish lure. He dis covered this use by accident when he lose his bait box and decided ro try the shiny wrapper from his cigar. Motorists are using amber "Cel lophane" on auto headlights, having found it renders them more cfhcient in penetrating fog. The it lea is based upon tl c principle that yellow light has a greater penetrative depth in fog chan while light. The DU PONT Magazme During the past winter "Cello phane' ' was* also used hv many motorists ro prevent the formation of frost on wind-shields. This was accomplished by fastening a sheet of ihc material to the inside surface of rhe glass, using adhesive at the edges only. Frost formation was prevented by the dead-air space left between tlie "Cellophane ' and the glass. Farmers arc now using "hot caps" made of "Cellophane" instead of oiled paper to protect cauhilowcr plants anil other vegetables during earlv stages of their growth- Com plete visibility ol the plant: and. passage of ultra violet rays are advan tages of the new-rvpe cap. Perfect roses arc being grown by placing a small bag made of "Cel lophane" over the tender buds to guard them against sudden changes in rent per,tture and the ravages of insects. This same form of protection has also been applied with success in tlie raising of fruit, to Insure a firstgrade product. Coin wraps of "Cellophane" are now used in place of opaque paper to facilitate easy counring and die detection of "slugs." Turning to the held ol art, we Imd "Cellophane" on a priceless museum piewat the Mcnopoliian Museum of Art in New York City. Here it is Bags r-f "Cellophane " are being used to protect rosebuds against sudden atmospheric changes and the attacks of insects. Note one of the holes at the base of thh bud to allow free circulation of air used as a. covering Kir a gold and sarin bedspread two and a half tentunes old. It appears oil she historic Charles II bed from Rushhrooke Hull, J'jigland. Curiosity tempts many visitors to touch the spread on this lovelv antique, but "Cellophane" wards oJf the inquisitive lingers. It shields ihe object ellectively while also showing it. brum art io archacologv...and again we Imd "Cellophane" doing duty. A wdi-knowit explorer who -eccitily returned from an expedition into rhe Honduran jungles brought sack with him more than six hundred specimens of Indian ethnology which were indivlduany wrapped in "Cel ophane," This was done not only for protection, but also because the specimens could be readih identified through rhe transparent wrapping. 71ie foregoing is a mere "sampling" of flic iusnv unusual uses of "Cel lophane" which have come to nonce during a comnaraiivelv short period ol time. People are just beginning to icarn how many wa\s there are to rake advantage of its unique prop erties. More and more we find revealing evidences of its ad apnihility to m an v oil i vines in widclv diver gen i fiehIs, some of them never before dreamed of as possible avenues of consumption. Keep the Cobwe bsOf Your Guns , ( unfnucJ v jv With such equipment installed at the base of a protecting hillside and with all rocks dial might cause rico chets carefully reimned behind the targets, anv sportsman can enjoy in hfty-rwo weeks many of the thrills he now gets only once a year on his annual hunting trip. Furthermore, lie will enjev throughout the year that companionship and good fellowship which is one of die haste reasons why men undergo the mild discomforts of a modern big game expediiion. Amuher important advantage ol this type of shooting is that regular practice enables (he sportsman to handle his gun safely anil also keeps him from being a menace ro his com panions in the woods during the hunting season. For the pistol shooter there tan be developed die same type of moving and disappearing targets. As a mat ter of f tef, Golort with us present equip ment can he used lor all types of hand gun shooting up to and including the AH Spec ia 1. The targets are nor rugged enough io handle die ,4Ys. Rumiingtiuin target*, built in exactly the same wav as the running deer targets, have been used for several Years for police instruct ion, and a charging-bandit, similar co ihc charging bear, has been used by at least one pistol dub. No sporr seems to have the inherent appeal to Americans dial shooting does. It is unforninare that so mam' sportsmen have felt that they could enjoy it oniv once a war. As has been rather sketchily indicated, dic~c is uo good reason why die millions of dollars which arc tied up in dre ar rrs in this country should not be made to work regularly for the picas Paoi> Fifteen urc and mental and physical betidtt of gun owners. The National Ritle Association will be glad io assist anv sportsmen's chib or spun mg goods dealer in the devel op men t of ranges that will make it possible for sportsmen io keep rhe cobw'ehs o:T their guns the year round. The Association is also kceiifv inter cMed in pliotographs and working sketches ol anv ranges of this tv pc which are already in opera; int? Correspondence mav be addressed io (he National Rifle Association. Tu t Budding, Washington, D. C. linii'oiCs Ncih : AG/y .wmi (*< >,< : r./rt'/fi U/.r) ht -I'j/.f/lf. J /Wi:'!1 f'r.-.-'i :T.i. Vt'jv.f.,v.', : / ft-.' tt T.ir..- r, `J>- fiuK-i r/r X-tlf/: f c.f r;ipan_if Pc/.-r'a, i f The DU PONT Magazine THE DU PONT MAGAZINE VuhthhtJ ami copyrighted by F.. I. DU PONT DE NEMOURS N CO , In c . Wj I.MINGTOX, DHL/,WARE, U, S, A, Suhnriptiutiy $1.00 theyear I-.. R. MANCHESTER................. ................ VJttcf PuHiulicrv rn.iy te|'r'c, vvicb ?dif alt amUrsanJ ;Jlurrsutnr:> -u'f|'nha-.c . arrylMkt sgieciai copyrighe. EJetircitypo will, when jsit>le, bt furimhcft on request. Vet.. XXVIII Ma y , 1934 No. 5 Wings Aloft In t iu - Mimmcr of 1900, when two voting bicycle mechanics from Dayron, Ohio, started for die sand clones of North Carolina ro test their first inan-sized model of the furore' air plane, they hoped ro prove that man could !Iy, hue one wonders if (heir expectations really rose higher than rlie glider did at that rime. Undis mayed hr failure, they returned to Kitty Hawk year after year, studied d rligeurhy worked hard, and on December 17, 1903, managed to keep a hcavier-tfian-air machine aloft for almost a minute- They had flown. No doubt they visioned the possi bilities of. commercial air transport, of aerial forces bar ding in the clouds, but they probably considered that only a remote prospect. Yet aviation was ro plav a thrilling part in world affairs within fifteen years. Wilbur Wright did not live to sec the great impetus of war-time airplane build ing or rhe subsequent development of air-transport services; he died in 1912. But his brother Orville witnessed t he unveilmg of an impressive monu ment a: Kitty Hawk, on the twentyfifth anniversary or their first motorpro pel fed flight. He has watched rhe industry grow from infancy to irs present mamrestage, supplying planes for use in even- part of the world. There is no need of anv statistical review of rhis growth or any listing of discoveries and inventions that have contributed ro it. The industry has forged ahead with amazing rapidity and is apparently destined to function with ever-increasing impor tance in the transportation field. The du Pont Company has been interested in the progress of aviation almost from the start, and has sup plied essential materials to aircraft manufacturers since planes were first built in quantity. When the need arose for a protective waterproof coating to he applied on the wings of fabric construction, du Pont chemists developed the first satisfactory air plane "dope" to he manufactured in this country. We recall that the NLC. 4, first airplane ro cross rhe Atlantic, was upholstered with the product called "Craftsman Fabrikoid." And we arc fold thatCharles A. Lindbergh looked through a "Pyralin" wind shield on his epic flight to France. Transparent "PyntJin"" and ' Plastaceie'' sheetings are used extensively by makers of airplanes, and the big air-liners are equipped with safety ghiss, one component of which is cellulose sheeting to give it nonshatremble properries. It may be noted, too, that "Dulux" and other du Pont finishing materials give pro tection and add beauty to many a plane you see flashing across the sky. The cover illustration, from a print by Ri tease, is merely symbolic of an industry that has already made tre mendously long strides in Lnuisportatmn service. One cannot doubt that the progress so far made is only a new starling point for even more signifi cant developments in the future. Qualify and Price Mu c h has been written around this theme in recent years, hut these lines penned by John Ruskin, long ago, still ring as true in our day as they did in his; "All works of taste must bear a price in proportion to the skill, time, expense and risk attending the manu facture. Those things called dear are, when justly estimated, the cheapest They arc attended with much less profit to the artist than those which everybody calls cheap. A disposition for cheapness and not for excellence of workmanship is the most frequent and certain cause of the decay and de struction of arts and manufactures." Bound in Tabrikoicf Chon.oil Engineers' Hiirulhonir. John H. Pcrrv, eddur-m-chid, W. S, Chilcotr, asosrnni ediror. 2609 p;imix Mctlmu-IIiII Rook Comj\tm , Nov York, 1934. $9.00. Tins volume is designed to supply both prac ticingengineers and students with a reference work that covers comprehensively the field of chemical engineering as well as important related fields. It also is suitable for courses in technical schools. The book is composed of thirty major d ivisions, covering every phase of the industry. It contains a large number of new tables, charts and sketches,and a va 1 uablebibliography. Much of the information included is not available under single cover elsewhere, for this is rhe first allinclusive reference work of its kind that has appeared in ten years. The different sections were written by specialists recognized as authori ties in their particular branches of chemical engineering; the handbook presents the efforts of sixty contribute ing experts. In addition, more than 150 chemists and engineers aided with advice and suggestions. We notice, ixicidentally, that eighteen of the authors, including the editor and his assistant, are associated with the du Pont organization. The following chapter headings, chosen from the table of contents, give some idea, of t he sub jeers covered: Gas Absorption, Distillation, Mate rials of Construction, High-Pressure Technique, Fuels, Refrigeration, Electrochemistry, Accounting and Cost binding. Safety* and Fire Pre vention, Flow of Fluids, etc. There are even sections on such subjects as Reports and Report Writing, Patents and Patent Law, and so on. Page Sixteen The DU PONT M Bandella Stripe is News! Knitted from w Acele," Du Pont's dependable cellulose acetate yarn, Inis vivid new fabric is the pride and joy of active sportswomen Crestwood Mills is responsible for mak ing this colorful fabric--so satisfactory to wear in warm weather, because it resists perspiration and docs not stick to the body after a game of golf or tennis. The dress illustrated here is a special model shown by Bergdorf Goodman, but David Crystal has made many otter interesting models which can be pur chased at such leading Fifth Avenue shops as Bonwh-Teller, Peck Sl Peek and Best & Company. The 1 tAcele * Department is always glad to furnish information about fabrics and garments made from this yam P<?fe Seventeen The DU PONT Magazine Zinc--in its Guardian Role It is extremely valuable in protecting steel from the ravages of atmospheric corrosion By F. EDEL Zl uimoN-noLLAR loss is a stagger- mg total, hut, according to some jxudiorides, the economic waste caused each year hr the corrosion of iron and steel products alone amounts to three times that sum. Rust, the flasmdcss fire, rakes a tremendous toll. Chemistry and electrochemistry are powerful allies in the light against natural corrosive: agents such as air, smoke, fumes, salt spray and uiois turc. To combat these destructive forces, research has developed more resistant protect! vecoatings and more elficicnt methods of applvmg them. Because no one method meets all requirements, a wide variety of mateTM rials are now used. A man g me fallic coa rings, however, zinc is still supreme. It is one of the oldest protective metals. While others have conic into commercial use for protection and ornamentation in re cent years, authorities still agree that where corrosion resistance is t he prune consideration, zinc Coatings should he used. The low initial cost of zinc is also an important factor. Galvanized iron is one of rhe hesr known examples of a protective zinc coating over a base metal. Although the zinc itself may gradually corrode, the Iron will not rust so lone as it is covered. Because of this feature, zinc offers better protection than most other metallic tourings. In galvanizing, the zinc deposit is formed by dipping a sheet of iron inro molten zinc, although it is difficult to apply an even coating- Treating irregularly-shaped and recessed arti cles hv this method results in an even less uniform layer. In modern operaTM tions, most articles are coated hv applying the zinc dectrolvdcaliv, because the thickness of the deposit can then he readily controlled. For a long time the straight cya nide solution was considered one of the most efficient for rhe electrode position of zinc, hut with industry a 1 wavs demanding improvements, fun her research was carried on and about ten years ago this work was rewarded. Investigators found that adding mercury to the zinc cyanide solution resulted in a more effective method of electroplating, anti that rhe zinc-mercury deposit also gave better protection than straight zinc. Page Eighteen In this respect, the coming behaves similarly to amalgamated zinc anodes in storage batteries, where the pres ence of mercury cuts down the corro sion of zinc itself, and tints prolongs its life. The "Duozinc" plating process, developed by The "R, & H.." Chemi cals Department, is of tills type. The mercury is admit red to rhe cyanide plating solution by means of anodes of ''Duozinc," a zinc-mercury alloy, the only method whereby the pro portion of the constituents can be accu ratel y con tro 11 ed. "Duozinc*' is used for plaiing almost all types of steel articles, of which hardware, radio parts, electri cal eqeipmenr, lighting fixtures, parts of stoves and washi ng machines, auto mobile wheel rum and brake bands, metal windows a re represen t a rive. Ji lias also been used to protect struc tural steel. In all cases, it adds value to the articles by increasing their resistance to atmospheric corrosion. The *`R. & H." Chemicals Depart ment of the du Pont Company will be glad to furnish more information about this process on request. The DU FONT Magazine Carrying a River Across Mountains .(.xKtinu Jfmw ]$ : //) Ten of ihe thirteen contractors arc using ` Vcntuhc," and the tin Pom sysicmof vemiJat ton. This is a straight blowing system, with results identi cal to the hlow-and-exhaust method. In some cases, pressure blowers with rigid pipe are being used for a straight exhaust, while small auxiliary fans and " Vcnaihc" provide large volumes of fresh air to the headings. Wenzel & Henoch, who have con tracted for ' ' \ enrn be ' ' throughen r the entire thirteen miles of the San Jacinto tunnel, will use the dti Pont plan. Thev will carry small Coppus blowers inside, blowing mir with fifteen horse-power fans through twenty-inch diameter "Yen tube." Fans will be spotted as boosters every six or seven thousand feet, while Jive horse power blowers and twelve-inch ** Vcntuhc* ' wi J1 carry fresh air to the fucc. At the west portal of the San Jacinto Tunnel, showing the firstsol-vp ofIh9 du Pan1system. Note the" VontubeM finest a 20-tnch tube for exhaust, and a 12-tnck line to carry fresh air to the heading, in the foreground is a "cherry picker" Crir pass. Wemol & Henoch Conttroctian C.antpunY The following If. .i IKi oicomracUus w itit the lengt It 1* 1 tunnels on winch thev ,ut w nr'kmg; Dravo Gmcrjicfine Co. Hamilton & Gleason Co. Wenzel & Henoch Construction Co. West Construction Co. MornMm-K.mid.scn Co. j. f. Shvii Co. Shofi itr & Gordon Himkin-ConRev Co. Dixon & Bent Bros. Broderick: H; Gt>rdcni Broderick N CA'JialfJii W nston Bros. Utah Construction Co. W 'ns ton Bros. W.ilsh Construction Co. Walsh Construct ion IT), Wtlsh Construction Co, Pittsburgh Denver Milwaukee.: Boston Boise Portland, h\ , Lo> Angeles Cleveland 1 .os Angt Denver Denver Mhmeapo in Ogden, Utah Miniumpo is Davenport, Iowa Davenport, Iowa Davenport. Iowa Y.il verde Tumid Bc'itiisconi Tunrid iSuu Jacinto Tunnel Whiiewutei Tunnel Mecca Pass Tunnel (.octnmvotnl Tumid jMifvheld No. 2 Tumid 1 lavlield No, 1 Tumid West Eagle Tunnel Wot Eagle Tun iK I East Eagle Tmnd Cosconth Tunnel W, Iron Ml. Tuimel E. iron Mi. Tumid Whipple Ml . Tunnel Copper Basin Tunnel (..(dorado River Tumid 37.1 30 feet 6.220 " 67.415 " KX206 " 5,927 " 20.105 *' 5.375 *' 9,677 " J 0,649 " 15,911 ' 9,46C *' 17,795 " 16,172 " 23,533 *' 32.225 " 12.261 *' 5,6-10 " flight--Portal of tfc<- ffe-rnaironj Tim,On? ]S-h.p. low-pressure Coppus blown/, .nounteti nn pin Norm, forces fresh air to the working face l/irouyii a SO-intJ} *' Ventube1* fine. Hamilton & Gicasjn Company Below...Mayfield Tuivief No. ?. This vi/.w sh/iwi <5 10-h.p, Buffalo low -pressure blower delienrint) air to the face through 20-iiuh "Vpntubn." Tty,: blower will soon fx? taken inside. Floyd Shofnor and J. N. Gordon, controctorj Below, right--Whitewater 7unnvl No. 2, thawing the dti Pont system of w/:tiJaliori. A /O./i.p. Buffalo low- pressure blower forces fresh air tc (ho loce through 16-inch " Ventube," <: Nooti pfrunre blower at the portal oxhaviting through 22-inch stti:i pipe, West l nnstrurtion Company Page Nineteen The DU PONT Mugmine Another Ute Trail Is Rejuvenated Canvon Road, another section of State Highway No. 16, running in a westerly direction from Loveland, bv the North St. Vrain Road, State Highway No. 66, running north westerly from Lyons; or by the South Sr. Wain Road, State Highway No. 7, running westerly from Lyons, rhen northward along rhe eastern slopes of Long's Leak. The List-mentioned route is now being relocated and rebuilr in accordance wirh the present Federal standards. Prior to the construction ol the Trail Ridge Road, the one automobile route across die Continental Divide within the park boundaries was the Fall River Road. It was huifr about twenty rears ago, along the north side of die river and just across the valley from Trail Ridge. I Ins is a narrow, winding road, located on steep grades, with several switch backs and sharp curves at dangerous locations. The new Trail Ridge Road is a modern automobile highway, twemv-four feet wde, shoulder to shoulder, with easy grades, and with widened, long-radius curves, as speciiicat bv the United States Bureau of Roads. The Trail Ridge job was one of the first major highway projects where special chores were made ro avoid damaging natural scenery along die right of way during the progress of the work. The precautions taken were based primarily on proper plan ning and careful control of blasting operations, as was mentioned in an utricle previously published ir: the April, 1935,mnnberof mis magazine. The motorist from the Last readies the new Trad Ridge Road by the High Drive, running west from Hues Park. Leaving the drive a.i Deer Ridge, after traveling about sewn miles, he passes through Hidden Valley, with its beaver dams, heaver huts, and quaking aspen forests; then climbs to the summit of Trail Ridge and follows the route of the old Ute Trail toward S|>ccimen Moun tain, the summer habitat of the Rocky Mountain big-horn sheep. Just before reaching the highest point on the road, 12,183 feet above sea level, he passes Iceberg Lake, where mirrored images of clouds can be seen minglctl with cakes of ice floating on the glassy surface of the pool 35D feet below. Leaving rhe summit, the motorist descends to Fall River Pass, at an elevation of 11,797 feet; drives along the headwaters of the Cache La Pond re River to Poudre Lakes and Milner Pass, 10,769 feet above sea level; then circles down the moun tain side to rhe North Fork of Col orado River and thence in a southerly direction to Grand Lake. If he so desires, he can continue through Granby and Tahcrnash to Bcrthoud Puss, 11,315 feet above sea level, and on to Denver bv way of Fnipire, Idaho Springs, and the Denver Moun tain Parks. Thanks to the untiring ellorts of the hue Enos A. Mills, which finally resulted in the formation of Rocky Mountain National Park, the scenes along the new Trail Ridge Road are essentially rhe same as they were a hundred years ago. As rhe motorise drives along rhe summit of (he ridge he sees the same species of wild animal life contentedly browsing by the roadside. He sees the same virgin forests, the same narrow canyons, the Even the wary biy-horn sheep arc often seen hrowsirtB on the mountain slope? in the vicinity of Colorado highways. This scene was photographed from the fall River Road, and just .. across the valley is the new Trail Ridge Road Page twenty Iht DU PONT A'ciyae..:,? same emerald pools, and the sanie rugged mo un rain slopes that the Utc brave saw in the olden days. On his leit, beyond the denselywooded Forest Canyon, file motorist sees the Continental Divide, with its glaciers, glacial cirques, precipkous Alpine peaks, and countless lakes ni iev water. On his right, beyond Fall Hirer Valiev, he secs the high moun tains ni the Mummy Range; Mounts C ha pi n, C h iejui tu, Y psi i t m, Fai re h i Id, Hagucs. and Mummy, neartv all more than 13,000 f'eec above sea level. The ocw Trail Rulgc Road wets Fink at a cost of approximately one and a quarter niillinn dollars. If was excavarcd and graded during t Iter working seasons of 1930, 1931 and 1932, and was surfaced with gravel during the summer of 1933. It will he oiled this summer. Sections nl the road were opened tar tourist travel stum after tlie grading contracts were com pletcd. W. A. Cult and Son of Las Aminos, Colorado, built ihc 17 mile section from rhe High Drive ro Fall River Pass, the greater parr of which is above the limberiine. This secrion required the excavation of approx imately 200,OCX) cubic yards of solid granite rock. As a genera 1 rule drill holes were spaced about as far apart as thev were Jeep, and they were sprung will) about one slick oi sixty per cent dynamite per foot of depth. Final loads per hole averaged about one pound of forry per cent dynamite Will the rope hold? Lct*$ hops It dost. Surveying a dangerous location on the South St, Vraln Rood, which h one f the approaches to the naw Trail Ridge Road in Rocky Mountain Notional Park Left A scenic location on the new highway where vortical cliff formations were circled during the period of construction. Nate rSe fine outlook Hignt -Uii Pont dynamite net only helps to construct modern road's, but aha to maintain thorn, this view shows the blasters removing snow from the Trail Ridge Rood, near Iceberg Lake per cubic yard of excavation. A ioral ol ten carloads of du Font explosives were used on ilie job. Incidentally, dn Pom explosives are now being used in removing snow from the roadway, before openmg the road to traffic, as shown in one oi the accom panying illustrations on this page. L. T. Lawler of Butte, Montana, built the eleven mile section of the highway desccnding around rhc mountain side from Fall .River Pass m rhe North Fork of Colorado River, approximately three thousand feet below. This section required the excavation oi about. JdlyOOO cubic yards ol rock. Acknowledgments for some el the information included Itere. as we:; as for some of the accompanying photo graphs, are thin Senior Highway LngineerC. E. Learned of ifie Bureau of Roads, who is in charge of Federal road construction in the national forests and parks in this district. Edmund B. Rogers is superintendent of Rockv Mountain Marion;*! Park. The Lafayette Centenary UOw-V'CVfY,-/ /.'.-w gy i ; Incident ally, the ship that earned him back ro France sit December, .1825, afrer his American tour was the frigate "Brandywine." He was active in the Cham bet of Deputies and ar rhe ad\aneeJ age of sevemv-three was again commander ol the National Gtiare dining the three dav revolution of 1830. In February, 1834, In retirement. General l.afavrtrr caught a sr\err cold while attending rhe funeral or a friend and died at his heme. La Grange, on May 20, 1834. When the news reached the United Slates, President Jackson ordered that the same military honois be paid to his memory as had been accorded to George Washington at the time of his death. .Memorial services were held in practically everc city in the United States. American citizens do well ro pay a tribute of respect to many brave and generous men. Genera! Latavene's contribution to our nation s freedom should never be forgotten. Pd<:e h/enly-Oi> /he DU PONT Magazine Fast and Fugitive Colors t fro//: /fj attcccJ" colors failed ro live up ro 4. The majority' of women shop claims made for them. pers ask for fast colors. 1 lie following experiences usually are reported: L Some dealers attempted m evade responsibility by banning the soap used in the home laundry. 2. Others stated rhar commercial Jatuidix methods wcicui lault, usually wirheut bothering to get in touch with die laundry being criticised in order ro obtain info-mation concern ing rhe complaint. 3- Many consumers fell dun no adjiisunenc of aiiv kind could com pensate them for the trouble caused by rhe fugitive colors. They preferred to make their purchases elsewhere. The following points were f:rml v established as a result of a 1928 questionnaire: 5- In spite of the almosr universal demand for fast colors, only a com paratively small percentage in 1928 reported getting what they vvanre<l. 6. Women do nor always complain ro rerail shops. Less than rhirtv per cent of those replying to die que.st i o fin a i re c a rri cd th ei r com pi a i n rs back ro rhe point of purchase. As a rest!Ir of facts, such as these, plus the suspicion that has arisen in the public mind with ivs;iecr i o some professed guaranfeed-fast colors that have proved to he fugitive, many of the leading manufacturers and retailers of the country* have insisted upon producing and selling colors that actually give reasonable satisfaction. As an indication of the 1. Nearly ninety-live per cent of the women are willing ro pav more for fast-colored fahnes. manner in which rhe textile indus try, up to the depression period, had adopted fast colors, it was reported 2. it is important rhar colored from a survey of the advertising pages wash dresses hold rheir color. in some forty* magazines rhar over 3. There is a definite demand for fifty different trade-marked brands of draperies of fast color. fast-colored fabrics were hang na tional I v advertised. DYESTUFFS \ frequently-heard declaration by those who have used the cheaper and often less-iughi ve tv pcs of dyestuff, in spire of consumer demands to the contrary, tr by those who have reverted to more fugitive colors in their attempts to reduce costs \ under depression comli- \ i \ \ \ This illustration, from an unretoucked photograph of a panel on exhibit in the du Pent Building, shows the effect of woshins samples of doth of the some texture, weight and color. The c*e at the left was colored with vat dyes,- the other, with ordinary dyes The box note, reads <ss follows: "Only vat dyes produce colors which arc guaranteed fast to repeated washims, exposure to sunlight and perspiration. When buying wash fabrics, don*t Just ask far fast colors, ask far vot dyes'* dons is this: "Although we are nor using the faster vat and uaphthol colors, we receive practical I v no complaints fnun our consumers/' However, it cannot he assumed rhai rhe absence of many complaints necessarily means that the con sumer is satisfied with fugitive colors. It has been shown by sur veys. for example, that the majorin' of women want to purchase last colored materials and are willing to pav the slight added cost resulting from the use of such dyestuffs. Again, it will he recalled that nnlv two per cent of the women purchasers, who reported [rouble in 1926 with colors, returned the article itself to the store at which the purchase had been made, (framing that the <7W Housekeeping question naire of 1928 indicated that rhirtv per cent of the women replying, carried their complaints hack to retailers, it is very doubtful if this is a country-wide average. Fven so, what about the seventy per cent who did not complain? By far the majority of women, when dissaris Tied with a purchase or with a service, fail to complain either to a retailer or a laundry manager, Thcv do not like unpleasantness. They prefer to go elsewhere to make their pun bases. And it is this great group that must be given consideration. Consumer resistance can be and often has been created hv a failure to understand the facts. If this were not true, women would soon cease making the false assert ion that ' colors used to he faster;" that "American-made dyes are not so fast " But there is still a demand for consumer-satisfying colors, and the wise business man will do well to recognize it by continuing to use the lamest eolots that are available. Gtj.\r a .sjTiiKo Fa s t Counts: For vears there has been a t:endeney on the part of some merchandisers to issue unconditional guarantees with their fabrics and garments. Wash goods and dress materials frequently P/iqe Twenty-^o The DU PONT Magazine have been sold as "guaranteed fast colors." Draperies and hangings occasionally have been "guaranteed" to be fast to light. Shirts have been offered to the trade with the assur ance that thev were "guaranteed unshrinkable," "guaranteed not to shrink," or were "shrink proof." In many cases retailers, whole salers, converters and manufacturers have been perfectly justiltcdin making guarantees of one sort or another. With full laitli in rhe quality of rheir merchandise, many have signed i heir names to rhe guarantees. With such as these, tire laundry industry has no quarrel. Unfortunately, other business men have offered "guaranteed" merchan dise to rhe public apparently without bothering rheir heads about how the materials would wash. Thus, in some instances, the term "guariimccd fast colors" has hern applied to fabrics ihai have been dved with dyes of "commercial" fastness only. Similarly, until a federal trade rul ing prevented the practice, the Uni teal Stales was Hooded wit h "guaranteed imported Luigi ish broad cloth" that had been "imported" Irom Massachusetts at id Georgia. It is largely because of experiences with materials of rhe above n pe that rlie term "guarantee" has fallen nut) disrepute m che minds of many women. There have been altogether too raanv cases where a "guarantee" has simple meant replacing a gar ment, if a customer complained. As a result, the innocent retailer, who lias been perfectly justified in "guar anteeing" his materials, has suffered because of the indiscretions of certain of his competitors. Ex TR a V AC 1A NT C LA f MS 1 Another policy that has tended to injure the former prestige of the term "guarantee" has been ovcistatemenus of faci. For example, several years ago a shirting was widely advertised as being guar anteed to launder 365 times." Per haps the copywriter selected rhe number because there are 365 davs in a year. At anv rare, if the guarantee was intended to be taken seriously, 365 launderings meant seven years' service, assuming that, the shirts A glimpse of the commercial foundry unit at the American Institute of Laundering, Joliet, Illinois...the proving ground of the Industry were laundered once a week. If, however, such a garment were worn during one week and laundered during the next the more customary practice then the shirting had been guaranteed to last fourteen years. No wonder "guarantee" means so little to manv customersf Ir is uncon ditional guarantees with no scientific hacking tint have caused trouble for even one who handles fabrics. There arc a r least two good reasons why the term "fast-color" is con* fusing to consumer and laundry owner alike. 1. Colored materials mnv be ad vertised as las! lived or primed and yei cause consumer dissatisfaction because no standard definition of fastness has been accepted hv the trade. Whar is or is not sntisfanorv colot fastness often varies with individual beliefs and opinions. What one business man may regard us fasr colored, another muv believe to be commercially fast only. 2. Certain concerns have had their product dyed or printed with colors other than vat or naphthol dyestuiis and have sold the ImisheJ product as a "guaranteed fast color" fabric, thereby saving a few cents cosi per yard rhitt could he passed on to the consumer who, in most cases, is perfect !v willing to pay for the fastest colors, if she can get them. Un s c r u p u l o u s Pr a c t ic e s : In die past, it has been possible fur an unscrupulous merchant to apply the term "guaranteed" to fugitive colors and lind the prop osition profitable m the following ways: I. Produce an inferior article and add a substantial amount to the cost price to act as insurance against "come-hueks," gambling that the value of die pieces returned will he less than the amount that was originally added to rhe price. 1. Produce an inferior article that \v ill undersell fast-dyed or printed materials and then go out of business at the proper moment. As a resuIr, home managers at times have purchased so-called wash last, tub-fast, or light fasr culorec material only to learn that a guar antee Hoes not mean anything. Of course, tilts statement does not apply to all dvcC, and printed cot cor materials rh.it are sold as "guaranteed fast, ' bur u has been she case so often flint "guaranteed" has fallen nun dwiepiue in some quarters. More and more reputable mills and merchandisers are controlling the use of rhe term "guaranteed," realizing full well that it is being used hv every unprincipled dealer in the country. Naturally, no ethical firm desires to be connected in anv wav with anv group that inrenionaih misrepresents irs merchandise Furthermore, it: is nor altogether imagination that prompts leaders in rhe textile industry lo believe that the time will come when those who misrepresent the ordinary "corn mercial" colors as ` guaranteed" last will reach flic end of their rope. Such a policy, profitable for a time, eventually becomes a "boomerang." Wh y t h l La vs our* And there is another phase of ifns quest ion rim deeply umcerm the maiincnanee division of rhe textile industry. Let us assume that a dress or a child's wash-suit Inis been sold as a "guaranteed" wash able color: also, that the garment was sent to a commercial laundry where ir was handled according t u approved standard practices. Not Page Twenty-Three The DU PONT A'tagazim infrequently, in spirt- of temperature control, and particularly when the ordinary direct carton colors have heci; used, considerable bleeding occurs during washing- When the customer has entered a complaint at i lie stoic from which the article was purchased, die retailer lias frequently said/Tm sorry; take ir back to rhe laisndrv. it is a guaranteed last color, " Note Lite inconsistency of that position- The laundry owner had nothing to do with the eh nice of colors or their application- And vet. mam- people expect a laundry owner to make good somebody l Is c 's guarantee, and they arc much put out if he refuses to do so. Sc t t ix g or Co l o r s a t Hour: Manx women apparently still ding tat the opinion that colors may Ire "set" at home by treating them wtrlt suit solution, vinegar, turI'cntlne, sugar ol lead, and so on. It is extremely doubtful ;f any of these so-called "setting" processes have any merit whatever. If fastness (if fugitive colors could be improved greatly by such treatments, dyers and printers rhe world over would he among the first to use them, and there would he* no such thing as ''commercial" colors. Jr is true that certain colors are after treated m the mill with such ingredients as sodium perhorare, sodium bichromate, copper sulfate, either to alter rhe shade, prevent sulfur colors from rendering the dyed libers, or improve fasrness to light and to washing, hut flic fact remains that the value of further "setting" of colors in the home has been greatly exaggerated. Stump Blasting . . . ydlow pme, red or Norway pine, hr and hickory stumps have main roots extending straight down inro rhe ground. These arc known as rap roots White oak, elm, chcsmur, gum and similar stumps have semi tap roots; that is, several large roots extending down deep in the soil, Q. Should stump blasting he done when the ground is wet? A. Yes. The secret of using expJo sives to advantage is to confine tkoroughlv tine explosive gases, and this is hes: accomplished when die spaces in the soil are hi led w iih water. Q. What is the proper type explo sive to use in stump blasting? A- In general, an explosive with a slow speed and heaving cTcct is most desirable, because it lias a tendency to blast the stump and the roots out of the ground, usually breaking the stump m pieces that can he handled. Q. How should lateral-rooted sunups be loaded? A- The method of firing will de termine whether one large, or several small charges must he used. Where the cap-and-fusc method is employed, the center ot rhe charge must he placed under the center of resistance. Often the routs and not the stump oifer the most resistance to the explo sive force. The depth of the hole will vary with the size of the stump. Deep holes need more explosi ves than shal low ones. Charges in light or sandy soils must he deeper than in stiff sods. The hove hole under a lateral-rooted Sunni'! can be made with a driving bar and sledge, soil auger or spoon. Q. How should large, heavilyrooted stumps be loaded? hole is used, the dearie method of sliouting must be iollovved, and the wiring must be to series. Q. How should tap-rooted stumps be loaded? A. The three common methods of placing charges to blast tap- too red stumps are (1) In the rap root; (2) One heavy charge against die tap root at a good deprh; ; 3.) Two or more charges against the side of the tap root. Tools required are a spade and a wood auger. Q What is the proper size of charge? A. Because of the various /actors which materially influence rhe blast tng of stumps, such as age, condition and kind of stumps; nature of soil and its moisture content, no absolute rule can be developed which will give the definite necessary charge for blasting stumps of different sizes. It ts also well to make several trial shots. Tables are available as a guide for determining trial charges for use under various conditions. Q. How should the hole he loaded? A. First, rhrusr rhe tamping stick down to the bottom of the hole t o make sure there arc no obstructions. If the charge consists of more than one cartridge, ami there is no Siam! ing water in the hole, it is good practice ro slit the cartridge wrappers lengthwise with a sharp knife before putting them in rhe hole. Then press each cartridge in place with the tamping stick until the explosive completely fills a If available space. Load all the charges except the last cartridge, which is to be primed. Its wrapper should never be slit. Q. Is tamping important? Questions and Answers Q What are the principal types of stump? A. There are lateral, semi-tap and rap-rooted stumps. Most srumps such as white pine, fit, maple and cedar have lateral roots extending to the sides in all directions. Southern A. With a very large stump, the charges may be distributed around it in the places where thev will he most elfec live. Usually one charge is placed beneath, the center of the sunup to split it. The other should he placed under the larger roots. Some large? stumps, if thev are rather dose to buildings, may require as many as seven holes Wherever more than one A. If the hole is not tamped, some of the explosive force wifi he wasted. Wooden sticks only should he used for tamping, and moist dirt is very effective. The material should he pressed firmly the first two to four indies over the charge, alter which it should he rammed rightly in the hole so that rhe tamping is at least as solid as the surrounding earth. Pfii>e Twenty-Four Easier, quicker way / to keep your car beautiful! DU PONT DUCO-WAXING REG. U. S. PAT. OFF. 1. Clean with the new Du Pont Duco Cleaner. You'll like it. Rub it on . . . wipe it off! What a change! 2. Wax with Du Pont Duco-Wax. Takes little work! Gives shining lustre for months. Protects the car finish. ... it costs you less than 3c a week!r U p o n t , maker of Duco, offers a new, D easier, quicker way to keep your car gooJ-looking! It's Du Pont Duco-Waxing! You do two tilings as simply as one, two! First, use Du Pont Duco Cleaner--the new liquid cleaner just developed by du Pont. It's easily applied. Contains no acids or harsh abrasives. Abso lutely harmless to finish. Quickly, it removes all grimy traffic film. Quickly, it restores the original color and lustre of your car! Then--to preserve that beauty for months, apply Du Pont Duco-Wax. It forms a hard, glossy, transparent film. Keeps out dirt. Prevents weathering. Protects! Du Pont Duco-Waxing--the new process! Requires less work. Saves time. Reduces car washings. Gives car beauty and finish pro tection all year long for less than 3c a week!* No. 7 DUCO POLISH: Car owners who do not wish to wax their cars will, of course, still use Du Pont No. 7 Polish (Speed Blend)---the world's most popular liquid polish. LOW PRICES! Pint of Du Pont Duco Cleaner r ir o i \ (enough for 2 cleanings) 7 ounces of Du Pont Duco-Wax (enough for 4 waxings) r A Each only U U U jr -^^pySlUiP ; usPATorr 1 SEND FOR BEAUTY KIT Contains enough Duco Cleaner ami Duco-Wax to [f d Uc o ___ _ | i,oli8h hwod u,,d fro,,t fe,,derB* n MfP , K ' "v (Offer good only in U. S. A.) Nb .o o s s & Co., In c ., Dept. DM-I, Wilmington, L anCl JUtfl m irn.WAV nfll I Delaware. Semi me lleauty Kit. I enclose 6c in stamps to help pay cost JttM | of mailing. i | g|recl............................................................................................. *2 cans of Cleaner and 1 can of Wax will last a year .. costs less than 3c a week. i City.........................................................State............................................................ - THE GOOD EARTH TURNS GANGSTER! MOTHER EARTH. Truly, all things to all men. Suste nance. Shelter. Comfort. Life. And yet this same good earth, so wondrous in creating and maintaining life, is also a deadly destroyer. Out of the earth spring dust and dirt. These gangsters join forces with Nature's racketeers--wind and rain, heat and cold --to scatter a machine gun fire of destruction on man-made things, robbing them of beauty and usefulness. No one, perhaps, has paid more penalty to these despoil ers than the owner of commercial trucks and vehicles. Who would help him reduce this toll? Du Pont did. From the same laboratories that produced Duco came a new finish for commercial vehicles--Automo tive Dulux. Its extraordinary wearing qualities, its resist ance to dirt and changing temperatures, its longer-lasting beauty, make it the outstanding finish in its field today. This achievement, a distinct service to industry, is but one of many in du Pont history. In their effort to obtain finishing materials of greater service value, du Pont chemists have been responsible for many of the major developments in finishes in the last ten years. Consider these: Duco for passenger cars. Dulux Marine Finishes for ships. Dulux Mill White for mill interiors. Dulux for refrigerators. Brush Duco and Paints and Var nishes that give beauty and protection to the home. Du Pont Finishes for radios and washing machines, dynamos and oil derricks, and countless other things. In the future, as in the past, du Pont will meet the de mands of industry and home for more beautiful, more last ing, more economical finishes. E. I. du Pont de Nemours & Co., Inc., Wilmington, Delaware. (fipop REG. U.S. PAT. OFF. FINISHES for industry and home DUCO...PAINTS...VARNISHES...DULUX REG. U. S. PAT. OFF. PRINTED IN U. S. A. REG. U. S. PAT. OFF. (