Document o9brQ48dkJOd0MjX4NXYeQ0x8

You Can Sell Farmers V3 MORE Dynamite for a Dollar HE cleared acre is a trade-maker,--every acre in crops Tadds to the purchasing power of the farmers. Today land-clearing is cheaper because a dollar will buy more explosives than formerly. DUMORITE,* the newest explosive of the du Pont Company, contains about 140 lkfx 8" sticks to the 50-lb. case. Stick for stick, DUMORITE does the work of 40% dynamite but has a slow, heaving ac tion like 20%,--but the farmer gets more sticks in a 50-lb. case. Besides, DUMORITE doesn't give a headache from handling nor will it freeze. DUMORITE is widely and constantly advertised in the leading farm papers in every section of the country. Readers are directed to "go to your dealer for DUMORITE." Cash in on this sales opportunity. Stock DUMORITE,--and urge land-clearing with the new, low-cost and efficient DUMORITE. For prices, terms and advertising helps, write to our nearest office. E. I. DU PONT DE NEMOURS & CO., Inc. Explosives Department Wilmington, Delaware Branch Offices : Birmingham, Boston, Chicago, Duluth, Huntington, New York, St. Louis, Seattle, Spokane, Portland (Ore.) * Known as PACIFIC STUMPING in Oregon, Idaho and Washington. more per dollar by using NON-HEADACHE NON-FREEZING DUMORITE ma g a z /n e Vo!. XVI1 Aflti L. w s a No. -1 Better Times Are Coming An era of large production h at hand O you believe that the popula it IRIAN HF l)U PONT 11, therefore, seems safe to assume B tion of Llie United Stales 1ms JJresidi*TiK U. 1. du IV. it fit* Ni'mmars di < 'o., I rcc. _ been conlljj eiiiIIv mci'ensingdur that the scale of living lias very deliiiUely improved. ,lltn the last, twenty years? The census figures show that Now, if there are more people and they arc consum re$u!L Do you think they lire wrong? If you are old ing more of the good Hungs of life per capita, if is clear enough, think bark twenty years. Have not the towns that consumption of materials must he? Increasing more ^nlh which you were familiar wry definitely increased rapidly lban the population and more rapidly than the m *ize within your recollection? Does not the country improvement in the scale of living; in fact, in proportion to he more thickly f>opuhited than it used to? to the product of these I wo rates of increase. In me it seems so, and 1 believe the census figures; .Notwithstanding Ibis, statistics show Lhai Hie pro ^Bisequenldy, I am going Co assume the population has duction of many staples necessary for producing these Iw h -h i increasing. same things 1ms nol progressed since HH4 even as Do jieople have more of 1 lie good Hangs of life than rapidly as the population. they used to? Are not houses on tile average materially llmv can this apparent paradox lie accounted for? better in Uml practically ail houses nou are dghted 11 seem* to me there Is no alternative from the conclu ^'h.h electric light., provided with steam heal and fur sion that ihe people a* a whole must have been con joshed with miming water and .sewer commotions? suming Hie reserve supply. If the scale of living con twenty years ago, within my recollection, ibis was not tinues as at present or, he! ter yet, if it continues to So Uj tlie extent, it is tinlay. improve, and it probably will, factories must turn out Are not people heller dressed flam they used lo be? a considerably larger volume of goods than they have Aty personal observation is that the average niau or been during the last few years. woman on the street is very materially heller dressed. This Is the line of reasoning from which I have con a iH'ggu-r is tolerably well clad. A. hare-footed cluded that better times are coming. Frankly, I. am adult would he u curioHily in any of the larger towns. rather disappointed that the delay m the return of Are people not provided with heller food and of prosperity has been so great; blit even this delay is not winch greater variety than they used to he? ICven the without its advantages, for surely the longer tlu* delay poorest enjoys his coffee or tea, and sugar is used by all. the greater the inroads on the supply on hand and the A-onsider, also, that there are now some 11,000,000 bigger the business required for replacement. jUitssnioinles in use, or say one for each ten oF the ]M>pu- I expect, that the rather abrupt rise observed in many . 1{,n: that the number of talking machines, radios and lines in January anti February of 1023 is the beginning pianos have been increasing at a most remarkable rate. of an era of production larger than any \et recorded. TIT E n i: PONT MAGAZINE Ripping Up Diamond Reef with Dynamite Def*|ic:niiig ike channel in East River over subway tubes is a job without precedent in harbor engineering ~W TISHA! JZK a mop of .\(*w York 1if City. I i engine \ ourself standf iug at l he southern most poinf on ManhnlIan Ida ml ;il the eastern side of Buttery IA irk where you can kxik up Hie Ku.:iL ibvar and get, a good view of the Brooklyn Bridge. Beautiful old Bridge, i-ii`t it ? \\ under fill immuiiiefit. to engineering skill! BuT forge! the! for Hie present, bet your mintlV eye iWm-, on the river ilseif. nnd yon will see two curiousloukiug bouts ;tiwhored somewhere between I he bridge u-id i Ho place where we have asked you to stand. Those boats are making engineering: history, too. Before we ye! to lliai. it is ueees.-ei.ry to explain \ ha I two subway iubes connect in g Maulmltau and Brooklyn ox I end under the river bed, and the position of the drill and dredge boats illustrated here gh'es )ou some idea of their general location. One of them is culled Ike Bri-oklyu Rapid Transit or Monbigue Street tunuel, Through it subway trains roar hack and forth del t'C! \\ liitohiilt SLreeL Manila Ham and Court Streci. Brooklyn. Idle other is called the < lark Street, tunnel, nminkiined hy the Itherboro System. 1 iiiiioreili- of thousand:-. of people ride to arid from work daily through these- tubes- nod probably not one in a hundred knnw^ Unit blasting opc-.-iInm.s in ..... jw "i .;.. 1 TJ, b htuje <(fvihjf` top# up ih? rarfrij frutpin u!.< ufu-r rarh bifixt. llie rock above 1 he turn? arc an everyday occurrenceThe reason for thai. too. need-; explanation. The ship channel in the East. 1? iver isn't deep e nough. Thirty fool of water was ample in days gone by, but not now when ten feet more of depth is neces sary to accommodate the largest freight ships and war craft. The big handicap to making the channel deeper is the Diamond Reef, winch is an exceedingly hard rock forma tion jutting up in the river bed. Chitling I ho dial mol to a forty-foot depth thus involves what amounts to uuder-wsiler nwk-quarrying with l ho added complication that con siderable rock must he excavated tiircidip urrr flic subway tubes. So far as wo know il is the first time in the history of harbor engineering that a situation of this kind 1ms boon encountered; and it is certain Hud, on no (iovernmenf m dertakmg of the kind has il been iie-ess,i.rv to take such elaborate safety precautions as are ellertiveiy carried out each day hy those in charge of the operation. The New Jersey Shipbuilding and Dredging Com pany of Bayonne, Now Jersey, is doing the work. Incidentally, this concern lias done a great deal of import suit. work in East River. In 1 880. to (rile one instance. Nils concern very largely assisted in blowingup licit C htte and in opening up a pas-ugewuy for boats of large size to come through the channel. Just what the company is doing to Diamond liecf is illust ra ted by lhe cross-section diagram on this page.. It gives von a clear-cut idea a- where ami how the drill boat, dredge boa l ami dn Rent dynamite are together nulling, blast ing a ml removing the solid rock wilhoul endangering the lives of those vho ride each day on the tube trains. The drill boat works constantly. ft is a fSoaling plaiform supporting Ihrcc drill frames, a big steam boiler, and a sit|>er.sirij<*!lire housing 1 lie crew and machinery. On these drill frames about twenty feet above' the water are the little engines that operate the drills. Thirty feet below Hie water level these drills '-.paced ten feet apart, twist and bore into the solid rnrk Io a. depth' of fen fork When Hie holes are bored and 1 la- tide is right, charges of 80 and IHT <> du Pont gelatin are packet! into lenglhs of galvanized iron leader pipe and lowered into the holes then it is only a iiiomeut's work to make the wires leading lo the charge ready for service. The drill boat moves away about oivenfy-five feet, riding on her anchor chains and the preparatory work is done. Then the shot-firer lakes his station and turns his eyes shoreward. He dgmihs I hat. he is ready. An inspec tor on the pier raises a red Hag indicating that he has seen the signal and that his assistant is telephoning THE DU PONT MAGAZINE ilie Brooklyn Rapid Transit train dispatcher. The tele phone wire remains open as the dispatcher watches the httlc green signal lights flickering across the lines which ^present the tunnel. Each flash progressively shows the progress of the trains as they pass the block signals, ...ffe. holds up other trains from entering the tunnel. Then* as the last green light fades, showing that the tunnel has been cleared of all trains, lie gives the word hf phone to the inspector's assistant. .."OWE goes the flag. The shot-firer quickly sends the electric current through the wires to the charge wnd. the force of 100 pounds of dynamite is released, Forty feet below, the rock has been shattered, but there ls So little disturbance of the water at the surface that unless someone were to point out a circle of foam surg- ln up from the lbottom, it would likely escape your notice. A few seconds later and it's gone. One of the ^companying illustrations shows the only visible of a 100-pound blast. The people on Brooklyn Heights occasionally feel a slight tremor as a charge off, but that's all. Within another ten seconds the ^patient subway trains are rushing through the tunnel again, the dredge edges up to do its work, and the drill boat goes back to put down another row of holes. Speaking of the blasting, Charles D. Pullen, vice president of the dredging company, is quoted m saying; "We push the rock apart. We do not attempt to blow the reef up. The charge cracks the reef. Then the dipper goes down and lifts the boulders slipped off from the parent rock up into the scow. When filled, the scow is towed away, and that's really all there is to it, except that it takes a lot of planning, a lot of figuring and a lot of money.'* Even though the blasts are being set off directly over the tubes, with only thirty-five feet of solid rock intervening, the shock of an exploding charge can scarcely he felt inside the tube, Before the first blast was made over the Clark Street tunnel,' officials went inside to note its effect. It is said that as the charge went off, "the surface of a glass of water placed on the floor of the tube shook ever so slightly,1*. It was a reassuring test, So much rock must be excavated that this work will probably continue into next year before it is completed. THK DU PONT MAGAZINE Less Vermin--More Game In ilu1 interest of game conservation every sportsman should do his part to kill predatory birds and animaL t you go into a drug store and ask fritm an ^rlicW footed enemies of game. And even I for a vermin eradivator, the clerk will probably ask yon whether you By RAY P. HOLLAND I'n-s. Amr-wiui C<uiT)f Pmli's-Livi' lbulc Sam, peeved at the loss of 820.000,000 to $30,000,000 every year want soap, powder, or u phosphorous pasta Pul 1 lie through the slaughter of domestic slock by predatory same question to ;i sportsman and la* will recommend animals, has dicedcd the Bureau of Biological Survey either a shotgun or a steel b> kill. Imp or poison such trap- la the parlaiH*e of I fit* 'Varmints'* as the mountain gunner. oonservalioiiLt or lion, timber wolf, coyote, amr breeder, the word bobcat and, the stock-killing "vermin'' L applied to all bear. Last year the Bureau birds, animal'' and reptiles employed 288 men to do Uuil prey upon game. this, and it is estimated that [n many sections preda tory birds and ardimiis art* they killed 80,000 predatory animals. 1 lit' woL.it foes with winch game has to contend. This has long been recognized in Europe where gamekeepers are employed to wage war on vermin the year `round: ami we Americans iiiu.it do likewise if we are to perpe tuate the game which fur nishes us with sport. W, B, Bell, assistant luologistof the Bureau, says: ` `The average destruction of these animals is estimated to !>e for each wolf and mountain lion about 11,000 worth of live stock annually; each coyote and bobcat, $50 worth; and each stock-kill ing bear, SoOO worth. The first expression you .When one considers that hear when game hccomo domestic animals are pro scarce in a. locality is that' tected by herders with good it has been "killed out by dogs, whereaswild game, the the hunters." In some cases natural food' of these ani this is true; hul the clearing mals, must shift for itself, up of covers, close farming, it is easy to realize that the which knives no weed and toll of game taken by ver- briar patches, the draining inin""is"euorni'cnni.' "It is'eon-' of marshes nod sw amps, ha s servatively. estimated that wiped out certain species of one mountain lion kills at game that would easily have least one deer a week, in been perpetuated in spite of many distances two or more; heavy shoaling had not the physical conditions of the country been changed. In many Instances where ClHJlfj b- if Nrw Vn'-'k eoim-rvritinri OrniiijI'iMirtii Tins r ?,.v :k ij .s t o f r,a mr -f u ij .k is s Criiw Coibbtfisf-f.'P'R luiwl.s .i iiofihnwk'. i. r}iarT>'hli1nntvd li-iwta Croat Jiorin'cl owl ft. M'filM-l 7. R*l m\in K. "F*ox Il->ux< cM that a' wolf will 'kilT-ten-to twelve, and that coyotes will certamly^ average one ..deer . eiuli in a season, while the certain species of game have become scarce and shooters lynx or bobcat prevx henvily upon the fawns. have been blamed for it, the responsible cause lists un- In classing the coyole and I lie hobout as vermin, the epiestionahly been vermin. This can he proved by fuel must not be overlook it 1 that they are deadly enemies citing cases where Hie decrease was fully sis noticeable of id', ground-nesting lards. The coyote is known to on game preserves, where no shooting was allowed, as it. take great pleasure in hunting the nests of prairie was on open territory where men gunned during the chickens, sage hens and wild waterfowl, and eating their open season. eggs. Both coyotes and bohcals are especially fond of Many slate game departments realize dial game can the young birds and systematically hunt a covey until not be protected merely by controlling the .shooter. the last bird has been killed. Vieli states encourage warfare against vermin. Penn The wild cat, both the gray and red fox, the mink sylvania. for instance, pays bounties on some fotir- and the weasel are small mammals that in Pennsylvania i THE DU PONT MAGAZINE are A-ssed ns vermin, and n bounty is paid for their capture. When fur prices are high, the trapper helps heep most of these1 animals in check. However, it is ^Teoiully imporl.ii.nt that bounly he offered for the J'<itsel; his jlJr js j}0ver sufficiently valuable to pay for l^I>Iiiiig hini alone, and a grcid prrrtudage of his food M tee. *' .\Ir. Duncan Dunn, head keeper of the New Jersey ,l *- Ciuiue Farm ul: Forked Itsver, stales that one v 111 destroyed about worth of game on the Jersey farm in three davs before it was kill^i pheasants ami 00 \viild turkeys were (1 ' course, slaughter in this proportion eoukl 4 ^vl' place in the wild state, hut it shows this animal l S mn' lapparently kills for pleasure even after iK Uingpj. |las peen saf islied. Hie ,]Cncvci' "vermin" is discussed among sportsmen, vW' 1^lf-wild house rrat is apt. to monopolize t be; eon- lhi-S<ltl011 Ihe deck, well-fed domestic cat is JlP<>n its own resources and learns to make its 11 n mg in the wild, H becomes one of the worst ene;m^ wf llird m , u.mmjs Ip' means confined to four-footed species. bird.'*1*1 i^r^S l>rcv are sworn enemies of tmr game /U S' principally among these are the goshawk, the hi'fPKr S Ike sharp-shinned hawk. These in.sl *. rfr< ^ ewr HOiir'tls i*s t he habit of other hawks, but (k*rt through the woods and over the fields K|, ,} flapping wings. The mature males are of a y*1.Ia 3 ^ue* while -Jit? female is a brown bird. These eee species of hawks should be killed on eveiy occasion. Red-tailed hawks are supposed by ornithologists to be more beneficial Than detrimental. In other words, Ihe bulk of their food is rodents and they are, therefore, classed beneficial birds not to lie killed. ^ R has, however, always been the opinion of ihe writer that abstinence from game is through necessity, not choice, having an extremely large wing-spread and a com paratively slow flight, they cannot dart into the covers kill quail and ruffed grouse so successfully as they tan catch meadow mice and gophers out in open fields. Frobably It takes the exception to prove the rule, but JV'e doubt if there is any species of hawk that, if he once learns to catch game, will not develop into a game Winter iu the locality where he limits. 1 he marsh hawk, that, every mildoors rnan has seen slmvly beating back ' ' ' and forth with steady, sweeping wing-stroke across the swamplands, looking for his principal diet of frogs mid reptiles, has been known to de velop! toa ki 1lerofgame unequalled hv any of his kind. ............. The great-horned owl -is the one member of the, owl family that scientists and sportsmen agree should be placed on the black list and . killed upon all occasions. There is a variance of opin ion between sportsmen and scientists as In the value of other species of owls. The barred owl, by nmny, is con sidered fully an destructive as the great-horned owl. One of the most common species of winged vermin and one of the most detrimental is the common American crow. 11 is fondness for eggs and his ability io hunt out the nests makes him extremely detrimental to such game birds as prairie chicken and waterfowl where they are nesting on the prairie In the neighborhood of prairie lakes and sloughs. The writer has often seen crows telling back arid forth across the grass land, method ically looking over every hit of prairie in search of u nesting prairie chicken or cluck. If a crow cannot dis lodge the hen from the nest, once he has found her, this black thief sets up a cawing that soon brings others to Ins aid. Then it. is only a question of seconds until they have crowded l he set I nig bird off the nest and are gorg ing themselves on the partly ineulwted eggs. Crows are frequently killed that show signs of egg-eating on the feathers around their hills. A friend of mine, living in Nebraska, well described it when he said he had killed crows that were "yellow clear to their eyes.'* Some species of gulls are egg-eaters, and while pro tected by Federal law, we believe permits should lie issued permitting them to be killed wherever they are found to follow this practice. Tin: sportsmen of Alaska bitterly condemn the gulls lor i heir attacks upon the eggs of beneficial birds and also for their habit of eating young waterfowl. A friend of the waiter tells of visiting a small, flat bar situated in a western prairie lake. On this bar he counted eighteen birds7 nests with eggs in different stages of incubation. Seventeen of these nests belonged lo avoeets; llie oilier one contained thirteen eggs mothered by a lit lie green-winged teal. The liar was so small mul flar that at a glance you eoukl satisfy yourself that no mammals made It their home. Several days Continued rm pruje 7 T II E I) i: F O X T M A GAZIN i< Demolishing Bethel Zion Union Church Dyuuniilu wan the only practical means of ra/iitig tire structure that had stood unshaken for 120 year \rri-: v;iut roil to blow down a %/ church," Tnnt in substance | In- message I rerefood By ('ll \BEES V. WEAVER Sn.h-n lioprein-nintiTA K. J. rl-j 1* Mi motif* &- Co., tic. was proponed only when it became apparent that by no other means could the building be demolished. The church a few norfo =igo from llie Worley Hardware Company, odicinis wanted lho work done, hnl they were genuinely of Iteaeing. Pa.. About \wo yvnrs ago ! dropped a firo- concerned to have the building razed wilhoul damaging -wnrnul i-luipcl hover a I Priucclon, X. -Jbill never oil her the valuable slunk frees and shrubbery in fruni h'h'm* tiacl 1 1 H r II asked !:j dotiiolbh a whole church. of if, or any nf llie tombstones in fhe nearby cemetery, some of lhem hearing dales as far back us 170L This meant that I he steeple had to come down in a narrow space between the trees in front of the building and lha. tin: wall on the cart side must he thrown toward the center of 1 he si ntel tire. A still gale was hlnwmg on February 15th, tho firs' date set for the blasting, so tin' work was put. olf niil.il February 21st. A large crowd including members of 1 he 1 wo congregations* newspaper reporters, rep re sent at ices of live motion picture operators wiih their machines, and prominent, business men from Allentown. Kiilzlmvii, Heading and other section.- assembled to witness the shuts, I had carefully worked out a plan o." placing and loading the holes to bring down the building with, four shots, but I must confess that I set about the task with some little trepidation as to the results. Bethel Eton Unton Church, huilt 1803* at (Irimvilkh Ca. The first shot was a round of three holes, drilled into the re:tr wall, or liable end, and each loaded with two Hie church in question was an old stone building at Grimvilie, Berks (bounty Fa., which had been built in 1803 at a cost of $4,500, to replace the log church which had been originally raised on the same site by the early Lutheran settlers in 1701. Since 1778 the church at Grimville had been the place of worship for two con gregations, the Lutheran and the German Reformed, and was therefore called the Bethel Zion Union. Church. if i II Plans had been made to tear down the old log churc h and build a larger one of stone even before 1776, but the project was abandoned until after the Revolution. Like wise, plans were under way to demolish this stone church and build a new one, estimated to cost $65,000, in 1017, but the World War postponed the work until this year, Upon examination of the building I found that the 'walls, were two feet 'thick, the side walls forty feet high to the eaves, and those on the gable ends sixty feet to the peak. The steeple, built of wood and metal, extended ninety-five feet from the ground. It was not a large church--'In fact, only forty feet wide and sixty Feet long--but the thickness and solidity of the masonry made demolishing the structure a difficult problem, while the sentiment and historic associations attached to the old church made the undertaking one of interest to the whole surrounding eountryside. The members of the two congregations had tried hi vain to raze the building with hand tools, and dynamite At the moment of the blast. A few semnds later the entire structure was only a broken mass of stone and wood ami twisted tin. . 1 THE 1>U PONT MAGAZINE Iv> uf |)uriiori|t, This wib thmv hi weaken the wall. with wires leading lo a I >n Font Xn. ?% hkislntg machine. oi' m lher words, lornt arches (Immgh the wall, leav- In all twenty-five pounds of Dumuril c No. 1 and i wenty ufiUhc corner* .slanding. * Idle second shot rou.sjsk ij of eigh [ holes-..four on each pounds or 00 per cent Red Cross Extra were used, or a lolnl of h>Hy-live pounds of explosives. mo : wall -each similarly loaded will) twn sfinks of When everything was in readiness I wariI the crowd oinoriLe and fired to weaken these walls bv cut.iing hark am! sei off the blast.. The building collapsed. The as stated above. front Wild felt on! ward, carryiugtho tower will) it. After . ^ sidl'd shot conxhled of six hole. I hrec on rarh I lie smoke and dust cleared away a large section of h S|de wall ~kmd.v . with was found lying among two slick* of Dumorite I he roof limbers in the eaelu 'This shot enlarged very spot where I had the arches so that follow big lhe blast there wen* five arches in all --three planned for it to fall. The side walls collapsed toward the center of the 1U the rear wall, and u large one in each oi the building, while the rear wall remained standing a fwo side walk. few seconds and then fell rid s aeco in.pI i xhetl- inside the foundation preparations were made walls. All. of the stone tor the fourth mid linn! ----v-s vvr fell within twenty feet of dioh withwhich I plan ned I lie foundation wadis. On lo bring the si rut In re the side nearest the cem down. In each comer of The ,*irrpf(' tlroppui. on plitiuinL hi !h-: xpw'v fepore ilr: trees. etery no .stones were the rear wall--a gable - . fn thrown more ais eight -M lu;ick*<l ,ix ..licks f Dumoril**. In >' *' fee! away. Manv of the roof timbers were fount Svo romcr' of the front w.-ill. 1 lended li>. oMij - *; broken after I lie fall and I he dale roof was no! dam Cross Extra 00 per cenl, \'A lC' S"h,,lh a aged half so much as had been experlc-L fn shod, ihv Hiis front vll i loaded ten holes will* Uns smne ppM- shot was completely successful. 'Flu' President of I hr* s'ive, Ihreo sticks to Use hole. 1 localise it r-a '' -1 Ended Stales couldn't have Ijcc-n gn'ctcd or contra In ami. furUn'iniorc, this wall .supporlcd Ik*; *'< >>-1 11 ; f filled more heartily than I was alter li e lower fell. The slwplm Then in each sU* wall 1 loaded ^ TtTt building had been razed without damage arid the mem Cvo and three sticks of IDuiBorite cueli. . K' bers of the church were pleaded beyond measure. were lp.hIiH*h diameter, drilled fifteen melig deep, spaced live feel apart and in each instance ioea ({ h*H above the foundation. 1 he charges \%cn 4 with No, t> electric: blasting caps# which went wnmc< . - Naturally, 1 also was much pleased vilh I he resulU, because' if. was lhe most difficult job 1 ever uudeiiook lo accomplish and du Foul explosives had justified !he attempt by doing die work efik seully ami economically. Less Veritiin--More Game Cmitinueti from pay h ;,f^r the Island had been visited and I bn foregoing hdorination secured, a fioek of ring-hilled gutk were noticed apparently feeding there. The next morning ihe island was visited again, to ascertain what these birds had been doing. The nest of the green-winged teal Was the first vi,slice. Each of lhe thirteen eggs had been tieatfy pierced and lhe content* sucked. Of the seven teen ;rvo<*m nests. only ihnx: leimdiuai immoh'sU'ih ^lany reptiles are also classed as vermin and their depredul ions as egg thieves are well knowu sitiumg game breeders. When an egg-eating snake finds a uosl of he does not stop until helms swallowed the last one, tapping turtles are very destruclive to young water- t*',vh often pulling them under the wider without as UiUch m a ripple. ' Kvcrywl ere Nature has a balance. Before men dis turbed this balance lhe iml.uml enemies of our game kept il in check, bill now with civilization constantly changing the physical comli! ion of llic country, with gunners afield after flic desirable species of game birds and animals, it is essential I lull we devote some of our time in thinning on! vermin m order to maintain lids balance. .... . Vermin <iarry on Iheirdostnietioii through the twenty- four hours of the day for throe hundred and sixty-five days a year. They luive no hag limit, no closed season. Along wiih the trapper, the one thing that will keep them in check is the sportsman in the field. An oppor tunity should never lie overlooked by him to kill any of the recognized Tiiirinful species; and wlu*rck an individ ual or ;i group not. generally recognized as harmful has developed bad habits, the same fate should be meted out wit hout any thought of the good done at oilier times. Till-; l) V VOS T MAG AZIN E Making Craff ITIIXG Use past year our company has received D scores of requests from interested sources for informal ion regarding the process of uuuuii'm`hire iff Du Fold Fahrikoid. These requesis (.d iiic from manufacturers invest idling the fitness of the material for their own me; from chemical and engineer ing societies for the enlightenment of their member ships; from publications in the ninny trades using Fahrikoid: from writers of special articles for magazines; arid from a surprisingly large number ui college students seeking flat a hr* I best*.-* cm this subject. We believe, therefore, that interest in this subject is general ciinmih to justify an article on the Fahrikoid process in this magazine, To make that article brief and its free j.s possible from confusing complications, we will forget for the time being the wide varieiy of standard ami special qualifies ami combi nutions in which Fahrikoid is now made to serve the thousand arid tme demands of industry, and touch only upon the manufacture of a. single type of this material known as ( Vafl Milan Fahrikoid. This is the grade, or quality, of Fahrikoid which is generally employed where the best finish and wearing qualities posdWe in a coated fabric are essential. By follow mg the processes of its manufacture, we will see where Craftsman Fahrikoid inherits the rugged stixuigth, the permanent beauty and the resistance to wear and weather on which depends its usefulness for for furniture upholstery, traveling goods, automobile i i.-.i.-'i f i rh` <: / jr r, < i j .-tinr tit, th* **'fjraii that might cae.w itonhle a\ remoped. lops of rigid const ruction and the many other products in which the reader frequently incuts it. .* By } J: The base of ('raftsman Fahrikoid is a cul.Um ' fabric of the type known as "heavy moleskin". ? Du Foul experts have develojied this fa brie with careful n" ^ < to the patlern, number, size and strength of the threads ^ and woof so as Hi secure a weave that is exceedingly 1 has great depth, softness and pliability. Although every care is taken in Hie production of thh ni,t to make it as perfect as possible, and, all hough it is cll!x( inspected before leaving l he mills that weave it, our first-''y..I if in the du Pont Fahrikoid factory is on lhe picking franco it* receives a further inspection before any of the ptoi'tc** | actually turning it into Fahrikoid begin. ^ The moleskin, unrolling slowly from huge rolls carrying ? ' hundred lineal yards each, p.-asses over these frames and * the keen eyes of female operatives skilled in delecting and n-1'1..' such defects as it may still contain. dropped threads, lumps and knots, which, though seem ingly insignificant. would become increasingly promi These mindly nent if riot removed at this stage. After sharp eyes and deft lingers have done their part, the moleskin is carried, still in huge rolls, to the dye vats. The purpose of dye ing is to change its color from the familiar grayish white of unbleached cotton fabrics to a color I he same as. or approximately the same as, the face of the Fahrikoid when t litunaleria l is finished. The dyeing is done by passing the moleskin hack and forth through boiling dye solutions until the proper amomil of color hm been absorbed. Only ! he* A nM qf t'ohrihM ptuuein<r ^ arc <d& y' ffMifc Fabrikoid- THE DU POST MAGAZINE fLi(,i !r Uls j:`e at i^Kh ver.V best and most stable dyes are used, and ,. u`fm practically all are made by the du Pont Company baelf, Ihiis insuring complete chemical control flUjlc\skiri js OV{1' this important process. After dyeing, the r. N.`m0vo ..T,,n OVcr & series of immense stemn-heaLed steel drums stjv*n"rM S exceSfi moisture. When dry it is inspected for color <>l|t aiiy then passed through a machine which straightens Wrinkle,s r h-re.g. uJiiril ins and rewinds it upon ro. lls. of , even width throughout. t t e moleskin shrinks -^^raWytheanddyetihni^s asnhtriini\kraygmegp^TFnUroT0^1v- made as ^`ea'1 as i' lil` ''Cg gfl fi..A in k all ' tendency o" f the fiiiLhed Fabrikoid to shrink N^rviee is eliminated at. tins stagi i most important lUolc. L- . . hr k'<i\-v *t 11 1S mm` reinly to be napped, or as one might say, p ^^alehed." If you were fo examine n piece of !iJu| <lbrikoid, you would find a leatlier-like surface on the 1 <c* UaP of downy cotton fibers on the back. This "napping" adds to the depth and softness of the material, gives it the 4`feel" of leather, and where it is used for upholstery adds greatly to its comfort-giving character. The napping machine is a large cylinder or drum that bristles with innumer able needle-like points. As the moleskin runs over this drum, these sharp points pick at ...the outermost threads and pull out the millions of fine libers that form the napped back of the finished Fabrikoid, '"i>; 7 Wh i, / . :hit.-.-t k <j ru/fx While the moleskin is.. being brought to this point, another type of cotton is undergoing an entirely different treatment in a far removed section of the plant. This is nitrated cot ton, cotton which, having undergone certain chemical changes from the action of nitric and sulphuric acids. 1ms acquired some remark able qualities, one of the most imporiani being that of being reducible into liquid or semi-liquid farm by various solvents. In the Fabrikoid plant thin n iI rated cotton is dis solved in large mixing tanks into a colorless syrupy fluid called pyroxylin. This substance is very similar in composition and appearance to the collodion prepara tions sold in drug stores and to Du Font Household Cement, with which so many are familiar. It is, when reduced to solid form by being sufficiently freed of solvent, one of the toughest and most wear-resisting substances known, and one of the most immune to deterioration from natural conditions. Absolute water proofness and pcmumenl flexibility are two of its outstanding qualities. It is this pyroxylin which gives Craftsman Fabrikoid its characteristic nppeanin<*e and its most important service qualities, but it must first be brought to the proper condition arid color. Tins is done In the "Mixing House." Here mineral pigments of almost every hue are mixed with pure, refined,castor-bean oil and fed upon the steel rolls of powerful grinding machines, whence they emerge in the form of smooth, semi-solid pastes. Carefulb weighed bab he.- of Mis'* pyroxvim < mor hi.rjh'envfj am! measnrinij ihe futwhed Fahnltyid brfow if. i# ttrapped remit! fur shipwvtti. 9 THE DU PONT .MAGAZINE p;irtc and i as tor oil are then thoroughly mixed hy grain, mid much of I he 1 manly of the material is revealed . mechanical means. The mix lure is then known a> iu the embossing process. Most of the plains used in "pyroxylin jelly" am! b ready for application to the embossing Fabrikoid are direct reproductions of dyed moleskin whk h hex just, parsed over the napping selected hides of iinluml ientliei*. By a process similar machines. to eli*< trophding exact en-ipcr duplicates of the grain.- Tlie application of the "pyroxylin jelly" to ihi*- iif these hides arc made rigid from the hides themselves. l.use fill!'ie i* railed "coal11u and b carried on m Every line, pimple, pit and pore mark of the mdiint "coaling machines" of `mitiinw length, Ai the front grain is .seen in the embossing plates and is Inmsfenvd end of a. cording machine the moleskin Hi I He unrolls to t he Fabrikoid that passes under i hem. and passes under a heavy knife, the sharp edge ol The embossing machines themselves arc of immense which pri>.se- vertically upon I he fahrir arms- iE dimension.-, capable of exerting many tons of pressure entire width Willi a perjure e hirh <-;in ;< regelated per square inch. They are healed during; operation and \ cry exactly. the eomhiniiiUm of heal and pressure leaves mi impres The *vp\Tosylin jelly" feeiU down upon the i'ahrie sion in 1 he Fabrikoid which is absolutely permanen 1 - pi-t hi front of I Ids knilV. A ft er embossing, I he 'HI-jelly is both pciiHral- material is again inspected n:gand adhesive. 3 mi my and, unless ills to receive - liitle b pvnuiited to ad a special finish or luster here in a .bugle passage or n special color effect, it through I lie . <ml ing tn;i- is ready for shipment, chine. A* l In iabrb rip- A great deal of Crafts under ihe knife edge all man Fahriicoid is speehdh of i lie pyroxylin is held treated before shipment to k;iik esrcpiiipr u very give it the Moorish, two- thin iihuA - t he fatin'* new pa>s<>> color effect which is so popular on furniture up through I lie long coaling holstery and on the Crafts machine. this I.Jdu film man (California type) dries and the nialorial b automobile tops that, arc ready for another ? rip m much admired for their under l he knife, where colorful beauty. This another wry thin fills: of process consists of spread pyroxylin b deposited upfin the first one. In thb way the fabric passes .I Machine. 7 he yujnii'u! and raptor <>d n hfclr tjii- fed {{win ahur nptin Uw. f< ant in*j xktl rnU.s. ing a color contrasting with the base color of the material over the entire through Ihe coating nutehine about fifteen times before* surface of the same, and of then wiping off as much of it has acquired a sulticieriify heavy ena l inr of pyroxylin llie .aided color as is possible. The in hied color will to he of i 'raftsman Quality. however remain in the valleys of the grain, where the Anyone who is familiar with the wearing qualities of eoiitnid with the original color shown on the lops of paint or varnbh knows how much superior is the the grain gives a van-colored, or <Iuolone;effect that b finish obtained hy applying a. large number of thin exceedingly rich and pleasing. coats carefully brushed out and dried, to one oblained hy a few applications heavily hud on. So light in the tedious coating process which we have just described lies much of tin* reason for I lie wonderful flexibility, Tlie Exodus of Farm Laborers toughness and weathering qualities of Craftsman Recently there has been considerable editorial com ibihriknkL Starting with the first or impregnating coat ment in tine South about the exodus of negro farm id pyroxylin, which secures a strong anchorage rt the laborers. It is claimed they are being enticed to plant- fabric base, each o\erlyuig I bin mat helps build up u in the North by offers of higher wages. Probably the film llml Is homogeneous yet super-stroug, us when siiunlion isn't us bad as it lias been represented to he: many strips of veneer are built up into ply wood. but one can be sure that if the darky with his fine arid As after every major operation. I he semi-finished shovel, and axe and hand-plon, moves away from the Fubrikoiil is inspected afler cooling. Slrenglh, tough South, more mechanical labor-saving devices and more ness, thickness rind anchorage of the film are tested. explosives will be brought in to do the rough work on The color* mu.d 1m; rigid, and the material free from all Southern farms. More explosives are being sold iu the surface imperfect ion.-e before if can proceed to lhe South limn heretofore, and it is a favorable augury for embossing presses. the ecmliiiuniuc of a wonderful record of progress ifmbrHsiiig is I rat gives Fahrikoid its characteristic made in that section during the past fifty years. 1 THE DO POST MAGAZINE Pyralin Sheeting--Builder of Fortunes Man of initiative* bill with filial! mean.-, have succeeded in J>nil<!ixig tip Mil businesses by rising litis material day, not many years ago, a His business grow by leaps and Bv (\ H. LKAf'M .sailor w ho had forsaken Ihcsea for a job on land was doing " * rf,Pnij` work u m lIk - Brooklyn SuJ*!. Pyrulhi D<>p:irtjri'hi NWv YurkOtCv Orlicv hounds. He capitalized il, added to Ids working foivr and sales force, and enlarged production. Within a year If was during Ur * rush hoar when Unm>ands of he laid built up a thriving trade. wore going lo and from work* A high wind was Only si h`\v years have unused siiiee ihim. Today l.hat morning, and Lite sailor paused occasion- the sailor rides lu and from I he office in a high power 1* lu wadeh men...ami women, cio-~~eImsiriu* their fugitive lads. In particular, hr noticed dial many "iris wore ladmi their hair r*bhons. Every tittle while the Wind swi.'pl a dainty ribbon over ear with a liveried eh.inffcuir at the wheel, and lives in a fine home in an exclusive, residential section of the rh\. lie X sated - a weal! hy man. buck? Not a! sdl. A commonplace incident famished him with a business building idea; .''u; K^ard rail info 11 c river below. J hose incidents Parted the Hdlor (hinkiiui. Why not make a device lie could convert t ha I idea hi t o money if lie could find a soil able material. Pyralin proved tu be the material. to keep hair-ribbons from blowing away? be labored he pondered the question. *uul before quitting I tine he had seen so Ihmkv nhbmm flv over the rail t ha I be ^solved to make and sell f lied?vice himself. ^ night be made a crude ribbon-holder of nsetul; it wasn't mneh for looks, but il worked. 4tlcr he fashioned one utl motive enough lo ^nrranl asking a young lady of his ueqimhibmce " W(*ar it. and she readily assciiUxb Also, she flowed it to her friends and. seemingly, every <m<- wanted one. The milor was soon hard piesseti in supply the demand. As he worked J-^enitjga in his little home diop, visions of Ida business came lo him. New York Suite mnnufuct urer was A making pocket-knife handles nt bone, slag horn, and wood. Bo were Ins competitor.':. Ills product was no better than theirs. Competition In creased, and he faced I he possibility of losing a substantial portion of las trade unless he could produce and sell handles at a lower cost or gain lead endup hy 1 winging out sotnelhing new. He cm tbit i '1: cut costs. The only id- I he time came when his spare-lime work 1!might in more money than his regular job on lc hridge. He determined to go Into the l-usi- .nuihhig and selling clasps exclusively. 1 * * hanioally, his product was pod enough; artistically, it aeked something, lie concluded that the metal was too nmimon- P ace. I'he problem, as he saw Here are jn.st a jeio uf thr thousand# of ariiofr.s' that arc made of Pyralin shirting <) ! ' Was to find n more at tractive, light-weight, easily ^nrkuble material that would not cost too much, and ternative was icj stimulate sidesbv introducing a novel yet he distinctive. Tie experimented with various effect u handles. But vs hat? T}Mleriids until fimdlv a friend suggested Pyralin. It Kor weeks he experimented, hut to no avs ill. One W:u j'wlwliiil Ik : wanted. " day while visiting another mamifael urer who was . bought a small quaulily and made clasps which p sold personally fo school girls at recess time. As ast as the ribbon-holder was introduced in a eomJniiupy school, the neighborhood dealer would reeeive p avalanche of requests for il. Soon the sailor had using IN'ml in Sheeting of various shades for making a novelty, the idea flashed on him: Why not use this stock for knife handles? Tie rushed home and sent in n trial order for Pyralin. When it arrived he set to work, and discovered that his machinery for cutting. m *'rs*r ali he could make, manyemnimr iiiiiiisoHeifed. Cuntinned on page !*i li THE DU PONT MAGAZINE eompleie indexes of ihe United Stales and Uu-nda; DU PONT MAGAZINE tallies and diagrams showing ihe distances heiwrea the largest cities of the Tinted Slates; areas an-, drain age bases, and lengths of the principal river.-. of Ihe world: areas of the earth, the percentage of hu e. re ; wider: i.ho principal religions of the world; in < piihUtfhfiti and tarpyriffMetl hy descriptions of She principal countries, nut lirii K_ I. 1)1 m\T DP NKMOnih A < OMi'ANV, Inc. physical features. their climates, their prop Sifbsttripiiati,. ftli cents thu pern governments, commerce, industry; particular-* E, K. M XNVHKSTt.Ti...........................................................................................FAtUr products, mining industry, manufacturing, mxy with err*lit, all anir;>-:- !vl illuMtrationa Uur-v rryini' f'r>|yri^hl. lJ1livm>l.ypt*a will, v.-lii-n ]>fi >:ii |i |r>, h` furi:<ln!d on of conimimieatitui such as tnmsporLalion, U telephone lines, cables; the characteristics of ihe i-|iiH VoL NVU AIMUE, V.HV, cities and important inslilulions. Nil. 4 We have devoted one of the covers of Ibis rinmio i: to an illustration of this alias and some del ails about All UnusualIv Va 1 uahle Book in an A p p r<>j >v i at e Binding ii. The illustration gives only a very poor conception of the binding;. We were forced to show it in. green, whereas in reality llie book is bound in a rich red |T7"I.|^'i' cffecl has Ihe .rize of a hook ti|um our Fahrikoid, handsomely stamped in gold and .splendidly /m/ toward it f Most of us visualize an flexible. We have seldom seen as fine an example of ff alias of lhr world as an immense* volume Use Ixiokhimfors* art . The publishers say of this binding wliirh is indispensable for a public library or office, hid that "Fahrikoid resists wear and retains its beauty iirprueUeal for the homo. Suoh a huge Imok seems tn for years. 11 is waterproof, grease-proof, non-staining, itsl tmulnte niFier Ilian invito us and no! to he suffi ciently companionable tor our iireside hours. Now comes the Funk & Wagnalis Company and proves that all authentic and ail raelivolv bound world alias ran be made of convenient size for tlie desk or library table. Hie particular alias which is making non-fading. If is practically sen If-proof and resists hard usage to a remarkable degree, 11 is not attacked by mildew or mould, by parasites or insects. Fahrikoid has t he feel and finish, Ihe dignity amide-luxe character, I hat hook-lovers admire, 11 is the ideal binding for books of such a permanent eh a racier as this atlas." history in this field is approximately seven by ten Our company not only can thoroughly endorse the inches and contains 17b pages; if is just the kind of a good qualities claimed for this binding hul feels that book for dose-tip. comfortable reading. One's first glance into it> pages gives a new concept iou of how interesting an atlas mu be. Moreover, this atlas is entirely up-to-dale. It was brought out to Died, n need ova led by the sweeping changes in world publics and boundaries wrought by I lie gren I war and events Following it. l'he text mailer includes the To operate _ a blast*r><^ machir><2-- the new lU2d AUas of the World and Gazetteer is a book so valuable for its contents that it is indispensable in the home, in the- school and in business. That is why we have made the arrangement, mentioned in the advertisement, with' ' Punk ' & Wugmdls Company, whereby any reader of this magazine can obtain a copy at the special price of SI.SO. 1H20 Cemuis of the (hided Stales, the 1021 Census of Canada and all other BrilUh dominions and colonies, the 1P21 ( cuytiH of Frauen mid her colonies, and .alesl ollkial enumera l ions of all other civilized t-fHMdries, Ihe greater porlion of t Ivin being of dates 11 >21 1H22. These new figures, now first published complete, appear in ihe newly compiled list of coun tries giving the area* and capi tals of each, Ihe list of the principal cities of the world, and The rack bar should be forced down us hard as possible, the operator usind both hands and all his we'idhi: tf . %J*C!rz;rincj' Titled-off Lands An Interesting Picture When powder-making opera tions were discontinued at Ihe Brandv wine works of the Com pany a- fewmonth* ago. morionpiciiire views of the old build ings and ihe burning of sevens] of the mills were taken. This was the oldest powder planI. of its kind in America, established by E. 1. du Pont de Nemours in 1802. These views m a one-reel picture are available on request . 12 I THE DU PONT MAGAZINE Duco Solves the Auto Finishing Problem Automobile manufacturers ami hotly builders are interested in ibis product that adds the quality of permanence to beautiful finishes E wonder if a piatto manufac By O. 1-1. BRIGGS through a few well-known concerns Wturer cotiki be found who would guarantee the finish oil Prmm'tloii ! termrtjwnt. Chr-rmnd Prr>nuclr; Division and depending on the "news travels" agency for advertising. Our system of finishing ha* a double appeal to the his product for a year if he knew that the in* tuna ti ear manufacturer and body builder. The first chum is would be exposed to the elements several hour* UK 1 superior quality; the second is sj>eed and economy of day; that in zero weather it would he stored in a warm application. 1)uvo Finish will adhere lo hare nieial if room at night and left iu the open duuug * u 15 the surface is dean. However, this method of applica that after it had stood in the burning hot mn during a tion can seldom he followed, due to the necessity of dimmer day, It would be washed with cold water and surfacing bodies to eliminate file marks and so forth. then polished with almost any polish on the uiarkc * We do not claim unusual filling qualities for Duco, "Ridiculous/' you say. Vet car buyers a because we find from experience that for production piano finish on their ears tuul expect tlseu pain * ,1 s work the regularly employed surfacing process of to stand up for at least two years. metal primer, glazing and rough stuff or sanding sur- The paint proposition, we find, is one oi l *< _ llkkc* facer is most satisfactory, providing the surfacing problems confronting the ear manufacturer am ,<K coals arc oven dried to aid oxidization. . builder today. After the body lias been brought through the surfac Durability Heybetf From the sales standpoint a beautiful finish is j11^' ing process, or lo the point where the surface Ls con sidered ready for color varnish, the use of -Duco for 1 fie color coals is ihc modern method of producing a. more as essential as mechanical perfection 1u the average durable finish in n shorter I hue. Two or three spray prospect. "Give us a beautiful finish hut uikc i . coals of Duco arc sufficient to give a solid color of durable/" m\y the sales managers. The "buck i* t mn sufficient body to permit rubbing lo a regular finishing passed to the production departmenk I ac 5s, a beautiful finish hut not a durable one according to me ^tandanls of the buyer. To the kymrni, fifteen to eighteen eouD iff suilacer, color varnish, etc., and a four-week Imislimg eyeie surface. Our material can he manipulated to give a high egg shell gloss Finish, or brought through to the high egg shell gloss finish, and then rubbed to a surface with pumice stone and water, followed by mtlcu stone ami represent quality -and it is expected to be rertcciecl oil, rubbing and final polishing. This process produces in greater durability. . , u n highly polished satin finish which seems to he gaining fio the manufacturer, this same finishing *VM< 11Ui in popularity due to its greater wearing qualities, erne represents -excessive finishing costs, not nul'tmgliner of cleaning and distinctiveness. correspondingly increased durability hut m For the maiiufnei urer who rerpurcs a high varnish appearance, . - * gloss, our process is carried through i\< outlined for the Frankly, does the spotlight test of fund mspit ion high egg-shell gloss finish, and that finish rubbed to n gunge the quality of the work by durability standards satisfactory surface', whereupon Ihe finishing varnish or by perfection of workmanship.'' _ is applied in the usual way. According to our analysis of the situation, mo m car muufaclarcrs and body builders are eagerly waiting for a quicker and better method of finishing cars. Realizing. the possibilities of development m this direction, we have for the past two years roneentrated FFZry This Process ofFinishing is Recommended .Duco Finish j j o k k c s k c k merits which especially justify its use as an under surface for varnish. The ]>ueo surface is almost ginss-like in hardness. Thus, 1 lie our research activities on the problem. Tins work has resulted in the development of a pyroxylin-type, uuick, air-drying enamel which can he applied by spraying* This product, is known as Duco Finish. Knowing that the industry has frequently been disappointed by claims made for finishes having some merit hut also mum objectionable features, we deterfined to find and eliminate these objectionable features before offering our product to the industry. In keeping Vfftb tohuisr pporolidcuycot fdciroencstelyr,vaptirsemfe*rrwineghtaoveinntrootduacdeveirt tised - entire finishing varnish coat, is "held out," giving longer life and greater depth to the finish. Our process supplements the greater speed of spray application with a. fifteen-minute air-drying time between coats, thus permitting the successive application of two or three coats of Duco. Overnight drying is required before rubbing. The Duco process eliminates the necessity of using rubbing varnish, which is the least durable of the regular varnishes, and eliminates the delay caused by the long drying time of rubbing varnish. > TII H 1>C POM' M \(i AZIX K The fiftcen-minule air-drying characteristic of i)uco also eliminate.- much of the factory troubles caused hy settling ol foreign matter in slow-drying varnish surfaces, A f hico surface will not chock or cmz<\ h not afieeted hy sudden ot extreme otumges in temperature. will wilhsLoi:! a high decree of jioal ;j m 1 is not affected hy alkaline <lim;d i<- emiditions. 'Phis featur-.' lias Ic'd to its immediate popularity in the1 'hmithwest, where the ordinary nuts* liiti^li hi-.lsl.ul fw\ months. The inirodi ctimi c>f the* Duco process in production does not in trod nee problems ,f increased rmOenid cost or expensive equipment installation. Our maierial costs are comparable %\ itb tin* high-grade auto varnishes, ami the regular spray equipment now a pari of most up-to-date simps ran he ul tliml with slight jdtenil ions tlu.f arc no! diffh-ntl In malm 111 many body-building plants the f in durl ion is limited hy the length of lime required by I he painting process. Often tins same condition is found in iintomohile L.rtone.s. Floor space is always at. a premium. Drying oven.- nre slow mid expensive. While our pro cess dms not eliminate lhe necessity for ovens, it does eliminate \ heir use in connect ion wit h colored varnish and nibbing varnish coats, 1 hereby ha-iening flic painting process, making available more floor space and lowering the cost of oven operation. This unique combination--a quicker finishing method and a heller quality finish...is naturally attracting a great deal of interest hi the automobile industry. Tn support, of our claims, we arc willing to send trained technical men to demonslrate our material and methods at. automobile plants, when desired. Due to the great amount of such work now under way, however, it is desirable to give us several weeks' not ice so that we ran arrange our demons!ration work accordingly. Book Moths Have a $4000 Banquet EVERAL months ago it was uHitoiiurxal that an of binding for permanent records. It is thoroughly S important section of the books in lhe Shite Library sanitary anti can he cleaned with soap and water. of Kentucky had liven irreparably damaged hy This sounds like an eimmenilion of qualities for the moths. The commit tee appointed I o h*ik into thideeal bookbinding, ami, in fuel, 11 m 1 is what Fitbrikoid matter quoted the records of the librarian as showinmgay pro|jerly be called. It is one of tlso.se products in (hat ldid of tin? reports stored in the Capitol lutd been which Science has vastly improved upon .Nillure. eh her destroyed or so damaged that they could no! he If k interesting to compare the destruction by mollis sold. These volumes were valued at SlhdO. It was of I he hundreds of volumes in the Keutueky library with :ibn stall'd i ha I the backs of a large' number of the result of tests made a few years ago in I he Philip reports were damaged and that to re pines. fn the tropics, insect life is place them would cost S224 = .80. very prolific, and the guarding of Wina l happened in the Kentucky books and records becomes a serious >!uto Library lm.s been happening in affair. The McCullough Printing Co, more or ie<s degree since ttten first of Manila made up a I >ook with various collected books. Moths, roaches and hinding materials, dividing each cover other insert;- and vermin are the nat ural foes of bookbindings made of Thr Kruhirkif Hfatr. (Uijiiinl into six squares and covering two squares with Fabnkoid and the re animal suh-1uno<\s, such n.s leather nr parchment, or of maining ten squares with other materials, each one said vegetable substance.- such as hook-cloth or paper. to have more or less merit, in resisling vermin anil in Fmiiigat km ami hmoel ieidex are purely temporary pre sect. a!Lick. After a. period of storage, Ihe book was ventives. Poisonous coalings have been Irani on hook- taken mil and il.was found lhill the clolh and leather elolh ami paper wi111 lit lie effect. if an> purl of a bindings had been thoroughly permeated and destroyed bookbinding is digestible, dial binding is doomed while Ihe Fnhrikoid segments had resisted perfectly; in eventually, regardless of how great the insect mortality fact, Mvdsted" is hardly the word* because the insects may he in consuming iL had paired them over compleiely. This practical lest If ad I lie volumes hi I tic Kentucky library been bound established fully I lie value of Fahrikoid bookbindings. with FahrikokL lii.e Stale would riot have suffered Use fins it now bears. Kahrikoih consists of a si rong col ton A :\ew Use for Explosives base covered wills a tough coaling of pyroxylin. This coating Ls a chemical compound that h absolutely indiges: ihle nnd ijnilc im;d irnchve to mseels; moreover, it. Ls so tough that, they cannot masticate il or break 1 liroiigh il. 'Fise coaling is also waterproof, mildew and From one of the Company's southern representatives we learn liinl dynamite is playing a new role ns the ad vance agency in loosening up silt in the bottom of a river bed, so that a suction dredge which comes on the scene immediately following a blast can more easily re mold resisting, flexible, non-peeling mid fast color. It move the material. Dynamite chews it up and the stands wear and weathering heller Ilian any other type dredge mv s iIIo w s il. blue teamwork, eh? THE I)U PONT MAGAZINE Standardize Your I p-keep Painting There are important advantages to he ^aim%d by adopting the system outlined in this article NC) matter a\ hnl. the size of the plant., the adoption of standard By K. <\ SIIKKLKR the diversity of conditions met, it has not been possible thus far to reach <:0^irs for all exterior and in i jiur pu.iii 1 iiinr has important advantages. Buildings painted a uniform shade are not only more orderly and l*c 1 <K`` ire to the eye, but are cheaper to main! ain, as Au;r w>lors of paint need he purchased and carried in a definite conclusion. (A suggested system is included in the chart below.) Undoubtedly in the near future a system will be perfected that will be applicable to the majority of industrial plants, ami will greatly simplify the mat ter of piping ideal ideation. ^btudardizalion guards against the "rainbow 1 which frequently results when the color of the paml is (elt to the faucv of the individual in charge * <* unit ' l ho advantages to he gained from such standardize- are; (1) greater at Irartiveness and unify of the ire plant; (2) a standard color scheme for each surhtee; (3) a. ready means of identification in ease of u ('^) a product for each surface of a recognized Uidard of qualify; (o) a consequent reduction in Vt*head expense liy [.he elimination of costly experi- nujps wipj uhkmm u materials ((>) simplificatioji in >'M nug materials for repainting*. ( 1 Of Preparation of a system of this kind requires a . JU< l,l surv^.v of I lie plant and the cataloging of all ey'-'W or arlk-l,.' in and about the pl'ant to be lf!<`tudrd Ui the system, A knowledge of the conditions ( .surrfsau`e mu" st meet, together with the proper ^ ao.Hals to use to fulfill I lie requirements, is essential, p ifl selection of tin* colors and materials must be asu upon the nature of the surface or article and the to he met, Below is a system worked cm! Ulterior surfaces of an industrial plaid; a. similar . S-Un lias been worked out for exterior surfaces: 1 uierior Surfaces-- Factory Idle value in painting pipe lines various shades lies in the safety element in case of trouble. It is vary easy to turn off 1 he wrong valve or make a mistake whereby some one is injure!! or the plant damaged. Color identi fication of piping guards against this possibility, If may also he desirable fo indicate the direction of the How of liquid* in certain lines by painting arrows on the pipe at regular intervals. Painting much inert guards a bright color, such as bright green, will serve to make them conspicuous and f hedr absence immediately noted. Operators frequently are tempted to take guards off machines ou the plea that they interfere with maximum production, or are slightly in the way. A prominent, color will advertise (heir removal and the employee will hesitate to dis connect a guard so treater!. There arc good reasons for the choice of certain <<dors and products for the surfaces involved. Chief among these are tlie durability and suitability of Use color suggested. For instance. Color "KP for "Exhaust Steam Lines" is a maroon that will, withstand relatively high teij>crul arcs. If one were to pul some other color on such a surface, it might be only a short lime uniil the shade had faded ami the paint worn out, because of its iiusiiilabilily for the purpose intended. (^i,OK k i*;v eoi.ou c h ip s h a d ]-; i *SK UA Knuimh- Metal Prirr.^r For new mHal nurl'acrs f, Black FiriLh for iiiUmur un-la. work JhI>' Light <Cijnu-tv'ii Black FitiLli for niadjmc'A I'iainh for marhinefy guards Finish f*<_- oil tanki- G Dsirk Orcei! fluid Water Pipe** II Blue Gas P m'* i Yellow i -fMH| I, All CijH'K %vi111 Vvjiijifii'ii Arid Pipes and vsi vt-< Brown Live Sl:nm Pipes i usually KL, M X OI- XIHuurne*on iiiiM-k ivilh YHiim fillings WJdU Vermilion euvered t l\\h;jusl. SI cani Pipi's IJ i:< I i it|4 Pift-s amt GoN -Svii-h Boxes and f km liiils Ventilating f hu'ts Lire Iviuipmonl Y1r5lli>of]w Snnci ]'nils Sprinkler Syslem I U HarGkruHvrcou v NVnJiilion Finish fur doors 1 Inmlinai'l; fur doois Kfi'valor G:itm V w M:]J Vida-. Kjt*t>Nlu*!l Hurl; Green Walls and Ceilings Dado ... 1 >sirL Gr;iv Getiicn: Floors WhileJ repented attempts have been made by various engineering societies to arrive at a standard system for the identification of piping in all industries, owing to From the foregoing, one can readily see the value of such a system in the upkeep of industrial planks. It facilita-l.es the ordering of material and guards against I he use of l he wrong product for the surlnee to be finished. The individual in charge of the painling simply requisition* a certain quantity of ('olor "X. if he whiles to refmisli some part of the the equipment. The purchasing department orders Usal quantity of material from the manufacturer by the same code. When received, it is sure to be the rigid product for the purpose. On request, Ike dii Pout Company will be glad to wo"k out such a standardization chart for tjtutr plant, and furriUb a sufficient number of copies for the guid ance of those interested. "These charts can he framed raid luma* on the wall for ready reference. i The. /.* a purthm of i'hiptcr :*J iff u JlHi-pnge lunik ,-d C/W 'J'nm'iplr-- ami PruHiw of I'p-kr-p Puhtiin-j.'' which mil xhorfh* he tiff the pn-.s.s. You shnufil hiue a rs>pij for reference purpoevu. S< iti free in phi hi t'jrctiihv? ho ropsc.it i! on fhr'tr rompuntf .PatloPcrt/. niruiionint; tin: Du Pant Magtizbv. Extra esspits, $!.(> rueh,} If) THE DU PONT MAGAZINE Pyralin Sheeting--Builder of Fortunes i'nnf'us.-mi (mm pmjr 11 boring and poshing hone and bom and wood was equally ^orvkxHiblo in fnhriesi!ing with Pyralin sil a saving in lime anti money ami with k>.s waste, tie paeketl n sample lint* of PyraUn-lmndknl knives and went mil on the road, rmxious lo know if I hey would sell, To his delight, dealer after dealer liked ihose new knives and ordered a trial assortment. Before he completed his trip, re orders began to come ha la the factory from dealers win) had sold out the trial assortment ami wanted more knives of the new type. So Ik : discontinued using: die other materiuls and specialised nri Pyralin handles. Five years Inter t his manufacturer was a weal! hy man. Pyralin helped put him on 1 he high mad to prosperity. Only a few years ago hut Ion imuiufnetnrers were using horn. itieUtL and vegetable ivory. The trade8 was clamoring for something new. One manuiueliirer risked investing 1,000 for additional machinery in produce Pyralin hulions. It: wuis a good investment; the buttons sold wall ami moreover the greater ease of fabricating Pyralin enabled him to make a larger profit. Other iTumiiffieturers saw his samples, grasped the idea and quickly added Pyralin buttons lo I heir lines, Almost overnight n thriving industry grew up. Hi m e then, mom than a million dollars'worth of Pyralin has been liuule into hut-ions in a single year. In many other instances Pyralin has helped build up Ing businesses from small beginnings. Pyralin is used in making more than adHMI articles or parts of articles. Each year brings on! seme new use. No one can foretell the range of its uses, nor the limits of its business-building possibilities a year from now---live years from now -or later, A Seasonable Suggestion la its field experiments in clearing laud with explo sives I he < .'oilego of Agriculture of the University of Wisconsin lias studied the effect of soil moisture on the economic efficiency of stump blasting. Results show that, if costs id <>ut fifty per cent more to remove stumps with dynamite during the dry part of tire summer than in early spring or late fall when the soil is wet, other conditions being the same. Stumping under wet con ditions saves (hummile, detonators and labor. The advantage of Hasting in the spring or fall, or al some other wet period of the year, may amount lo $20 an acre where t here are one hundred stumps or more to the acre to be removed. There lire many limes during the year when culti vated areas are too wet to work in. During such wed q>ells .slumping operations can be carried on with profit and under most advantageous circumstances. Explo sives dealers who are seeking for a timely approach to encourage farm trade will find in these facts a message welt worth passing on to their customers. E. I. d u Po n t d e Ne mo u r s & Co., In c ., Wil min g t o n , De l a w a r e AH Inifairies Regarding dn Pont Products Should he Addressed la Our Nearest Office ACIDS AND HEAVY CHEMICALS .-i cui-r. r.htin.-: mzd nti-iicU-.m*'r.r:v y >`.rnii-td j-rmka'ts. Newiurk, X. J. 25o \ underpod Si. eiiiiiHii ipiiiH. Pa. 35 lh Sr. t; t .xy Ferry R 1. CHEMICAL PKOUtiClM k'runz,: i''r:u`t. rihi't, t.ad*- dion, <t'W!. /*'.rti>;;j < i` me* ! \. Pym\yt: n bicjicers ij mi r.r.Gm%-l\, split and p%n.:;;l itaidrr si'tU'.i'-xs and .-i7.'i'c pyr,-;%-yhn prefw i- U->'i:. rll.'-i j.iAfiJif-l. Partin, N. J. Chicago, III. 1 M l McCiiniiF U Bldg. San Francisco, Calif, 5M> Mi'dor. St. t XEAMABLE COLLARS ( .s'*. U'ue Rtidni}* nmi Wiser Piymph br,sn/iz. Poughkeepsie, N. V. Wuiks DYESTUFFS t>yfstuffs rind dyr-JuJi' iii/w. mrdiuu-y. Elusion, Mass. 274 Franklin St- Cliarlottc, N. C. lid W. Ki-r-t fit. CJdcafco, III. JIM Tiibim- UM. .N'ew York, !N. Y. H Thorn,!:-: SC. Philadelphia, Pa. U-> H. I'loni Su Providence, R. I. ~li> IIo>=pitalTriiK Blit,. Shanghai, Oiim* Hdvii Dollar Hidh , 5 I hintmi Rnad EXPLOSIVES Esplusivci j-.-r all inJu-iirud. ,t,;ri,-uht4r>:!. military and Sporting; uses. Birmingham, Ala. o(H Ehowii-Marx Bid.!}. Boston., Mass, ihuvcv Rmlam: Cl,anby& Iddfoi-ISK. Buffalo, N- Y. I'ruderiLLll BltA, Chicago, III. 1X14 .Xfi Oirisikk BEtl^. Denver, Coin. 406 ideal Hldio Duluth, Minn, ll.-ililfy HUr. 742 E. SisfK-rior Ht. El Pu n u , Tin.. HI! MilF? HYix. lluriiin^tmi, YV, Va. 401-1R.r'muim-Pnch- ar-l lifdto ' Kansas City, Mt. 22s; Hi .xi-rilt Bldg. Mfdcit City. Mex. fC1lfki<'ifle La New York, N. Y. 120 Broadway PitrKhurjIk, Pa. Fu'.(ui> IUd/t, Portland, Ore. Xur'-lr.viMtern National Bank Hldjt- St. I,ouls, Mo. 1 7th r. Ar.-adr- HOIr; San l*Yanelsco, Calif. S(i'> .Uiodim Hi. Sea C tie, WaahI-Io r u Buildkip id At c . c c Clicrry St. Scranton, Pa. 701 Trod* r* Hank BUe. Spokane. Wash* 721-22 Old Xiit'1 Hank Hid,, RiVt`i-?HSi' Av*. A Stiven.f St- Springfield, III. kt-Lcii Bldj;. FA11IUKOIO AM) RUBBER FABRICS Fnhnkaiii for nulr.moHe lops, .'an 2v <\tvrring and uphoitlery; boiA'hindinsu furtiitun, in%- y,<:gc, i `/Kline .shmh% i'Us'k. i'uhbrr fiihn'r.K jacrurHtaailnos. topr aod Newhurtth, N. Y. S*n Frar\cco, Calif. 5(0 ivli>"cn Si, LITEIDPONE, DRY COLORS ik PIGMENT S I'raJu.ts fat p.iinl, ink, vitiiolk. hnoteum, rubber and xdkrr industries. Bu^tun, Ma.*w. Evvreu Station 49 ill. 11W ELtoa Ave, Newark, N. J. 256 Vundi.Tpoo! Sc. Philadelphia. Pa. 35ih ft (iray s Ferry Rd, San Francisco, Calif. So9 Mi>?icn Sr. PAINT'S AVI) VARNISHES I ,-amfitHe Ih.e af pnini and v.srr.tsk products for nit home uni! industrial uses. Botiton, Mass. HveTi'U Si.d sun 41) Chi2c1ag0oK, FIIaI..m Avt'. Flinl. Midi, Flint Yurniuli fc Color Works Newark, N. J. d5r, \'anilc: po!.2 St. New York, N. Y. Rniim Al l Htid-ot* Tor mina' Bids'. 30 ( hutch St. Philuddrihui, Pa. 35s.ii ft (iiay'r FVrry 7<(L YRALi-N h'ury Pyniim. Shelf Cyr&lin, and Amber Pyralin toiler u art. A'`reel!,v nnd trunspar ent shrrtiny,. fnis% tube.-, and beading. RoHtnfi, Mass. Matvey Eluildim! Chamuafy & Hvdiord Sts. Clilrafio, 111. l-i Xcrth Franklin St. New York, N. Y. 21 !:. RUB Su c k . St. Lo u In , Mo . .\];JliJivkiudt Hl*Uu nfi? \Vu>hiu;^loii Avc. Sun Francisco, Calif. 506 .VI v-doii St. Atlantic <~ity\ Sica; Jersey, 1121 Boardwalk, IJa Punt Products Exhibit 10 1 The Greatest Development in Finishes for Many Years NEW product, VISCOLAC, has been de A veloped by the du Pont Company for clear and enamel finishes. This material combines the following1 valuable advantages:-- Steam, boiling water or hot dishes, etc., do not mar or soften it. Hardest, toughest, most durable finish produced. Can be cleaned with soap and water. Does not check, crack or craze. Cannot print or become tacky. Air-dries rapidly. It is waterproof. Progressive furniture manufacturers who have already adopted VISCOLAC assert it does more than we claim. Our technical men are available for a limited number of demonstrations. (SU PONT) Viscolac rr The Armor-Plate Finish 99 E. I. du Pont de INemours & Co., Inc., Chemical Products Division, Parlin, N. J. These Accessories are Important! Select them with Care BE SURE that the du Pont label is on your blasting accessories as well as on the explosives themselves-- for the finest explosives made will not deliver maximum effect unless used with the best detonators and accessories. The experience of 121 years enables the du Pont Company to offer the most efficient and economical accessories for every class of explosives work. Blasting Caps Delay Electric Blasting Caps Blasting Machines Galvanometers Leading Wires Tamping Bags Electric Blasting Caps Fuse Delay Electric Igniters Rheostats Cap Crimpers Thawing Kettles Write for Blasting Accessories Catalog containing description of above accessories and practical information about their use. E. I. DU PONT DE NEMOURS & CO., Inc. Explosives Department Wilmington, Delaware Birmingham Boston . . Buffalo . . Chicago . . Denver . . Duluth . . . Ala. Mass. N. Y. . 111. Colo. Minn. Branch Offices: Huntington, Kansas City New York . Pittsburgh . Portland . W. Va. . Mo. N. Y. . Pa. . Ore. St. Louis . . Mo. San Francisco, Calif. Scranton . . Pa. Seattle . . Wash. Spokane . . Wash. Springfield . . 111. J