Document YrGrXoEDngyarGpnJjJ4G2xK8

do ^ . POWER January December, 1948 january-Dcctmber, 1948 POWER January.............................................. February.................... .................... March................................................. April.................................................... May..................................................... Jwa.................................................... MID-JUNK BUYERS' GUIDE July...-..........t.*;...'....................... August................................................ Sopteosbwr....................................... October............................................. November........................................ December......................................... I- *7 ihlU 184-198 >(4J UhSU UM 481*416 817,881 868*661 669*188 786-616- ACCIDENT AND ACCinBYT FHEVKNTION Save tm oq hollar drum* by plained opera tion: P. X. Oil|....................................... *474 Yard pipeline aroint promote* safety. Kilos SUmlt.....................................................*864 AIR COMPRESSORS Ooek-eontroilsd valves drain eampreuad-air yitom. M.A.jubfa........................................*110 Elttttrop^umsUoiyeURi dean coal lammio*.^^ PIva-type cap hold* cheft aieeva in pUca. J. IT Tourmna....................................................... *307 Rerolulien counter MUn the cstnproMr air Forraby AIR CONDITIONING Aneley Hotel. 0*., air conditioning installation present* nausea) probltm*. P. A. K*tteraon*l40 Burdioea. Port Loudcrdal*, Fin. use* unit air conditioner* coded by w*ur from centrel tyeleni. T.W.Reynold*..................................*830 Ctadanatl bold atop department itor* call* foe nodal hnadllag of air condillcuing. H. C. Hoffman.....................................................*393 Fit th* eir-oondliionlog y*tem to the load. __ 3. D. Conalanea..........pt I *16 pt8 *79 Americas Institute of Electrical Engineer* Technical brief*............................... ................868 American Bodctr ef Mechanical Engineer* Technical brief*......................................*440,490 American Bociety of Teallng Material* Technical brine................................................. 6C8 U brief*.. ............ 490 ATOMIC ENERGY The atom Jol^-U it being doae? (Ed)............... 363 Power reports--where AmerieeiUnaa In 1048. Robert Colborn........................... *904 AUSTRALIA Qfdn*ypow*r*tationof modemderign............. *83 n BEARINC9 Pot tep-ootah dl*cl operation know your dcoTQ'bearing fundamental*........................... *99 Modern beariog material* meettoutbdemsod* ofaJaalaervlccoondiUon*............................... *78 Rett*. Art of maUiI factan (Poser'* Data dhrata).............................................................. 604 Slopping belt sllppag* oo dywhra). 0v*n, 8qlrra, Oriffu, Belton, Mick*. Orefnar. Elliott, wybon, Buteba, Holman................. *40 Aecu; J. B. .Itumann.. .> 483 Ameriaon LUtoa_n__S_u,,ppl,y C..o. And* *eU-plo**d boiler plant pay* big divi_d_e_n__d_*_.___I_t.__F_. Comb*..................................... *489 Blaakbtwk Station ef Wiacnaelo Power* light inert**** eapidly by now one-boiltr-tf- lurbin* unit. L. M. Abrah*m*n................. *830 Burning oonl os everted *tok*n. Rowley, MeCabo * BkroUkl............................ *709 Bunting coal on undarteed (token. Ro1*y, MeCab* A Bkrataki............................ *768 Burning puiert*d eoa). Rowley, MeCab* * SkroUil..................... ,...................................... *783 Caiculal* eonUnoou* blowdown rata from chloride coneenuation*. J. F. Hyam (Powtr'a Dels Sheets)...................................... 867 Pag* Canada Paektra' St, Bonifaea plant bursa . lignUaatefBdcndeatoTPH. O, E.Olb*oo.*660 Coal (aader regulated by (hock aboorber. D. II. McKay....... .......................... ............. MU Cat ernok* by proper ]ct application. Rowley 6 McCabe........................... .......................... *076 Expanding boiler tube*. J.R. Brown............... *718 Fraser Companies. Lid. paper mill eliminates old boilera sod cuperimpoero power generstoneo eyitem. W.P. London.......... ............ *388 HeeUesrrr system. Kraus, Bdlm, Goran. . . Ficfca..................... ................................... ...*716 How pvtrAre let* can ba made to cut amoko. Rowley k McCabe........................................... *639 In*tailing vaato-ncal boiler loertaaea *** torbin* BttlNIity. O. R. Tuner.................. *431 Internal condition* of old boiler* gold* water treatment lor oew imlla, U, B. luduatrlel Cheateat*. Wtl*h, Rivera* kllduff............ *649 correction 603 Make your Inmcee-dcsign apedAoaliona work lor you. N.J. Connors...................................*300 Mriebcr* Dktitlwfra oil-fired plant bait onaluofeeahArodon*. J.A.Ream*.......... *4 Metropolitan Rdlson in Middletown. Pa. now topclng turbine tervod by bigb-preraura __ bcakn. T. Y. Mullen............................ ...*670 Pro-Ignition grate for burnlrg brown coal an travdiog rratc (token............................... *63 Proper hand firing make* oo amok*, Rowley * McCabe....................................................... *486 Sava atrea* on boiler drum* by planned oper ation. P.X.Oilg..........................................,.*74 flenhUn^boiItr*cleaned by elr-i*t motor. L. Scat* in boiler* and superheater* dlaaolvad by hydrogen-nolit* treated water. Webb a Yoder................................................................. 18 Seetlonallaad furnace for itcam generation from wood rcfuia......................... ....................... Silica removed by a eladge-blaakethet-pretaa softener. Yoder, Carboonlar 6 Mom*........ *396 Bled-mlU boiler* dedgned for bkaHurone* gw. W. M. CllnyJr......................... .....*380 Standard Oil of Indiana ri/thkn refinery team by topping unit*. Monro* Milbrook__ pt 1 *184 pt 3*934 Hupped ha* unusual defect............................... * Thermocouplq detect high ash tcvd la dooed preceilpitatonrhopper. Q---.-H---o--l-u--b--e--c--k--............ *1 Tip* for pneumatic eah conveying. t ahn.................................................................. wa 3600-rpm fluid driven adjust feed-pump ipeed to boiler load, J. D. Rorabrough................. *19 Type el Bring equipment used with Iodustrial MilaniMcntlyordered............................. OH Underfed stoken are nisul to operate emoks- frc. IlewUy* MeCabc......................... ....*384 Wont your overfed stoker to ba amokurw? Rowley * MeCabc..........................................*188 Way to remove asb sifting*. Appleton, Tbernsn. Oermn, Strajaor, Giordano, But* _ eher. hlesa, Helton, Onpeabeim.................... *3 What * -* "r--* 9uyen' Mid-J Canada Packer*' 0L lloniface plant burn* Ugniu *t efBdeacie* to 79tt. G. B. Oibeoo *880 Fraser Comp*trim, Ltd. modera]*a ntint with ey* toward fu un expamion. W. P. Londoa*388 Fraser Companies' plant remove* t/wuh caom* coloring matter fo laedwaiar by treatment. W. P. London.................................................... *480 Hydra development............... ,....................... 192a Melcber* DbuUtrim--<i*w hotter plant dMgs fanturen. J.A. Kenrns................................... *4 Cheek tv (poem).......................................................... 848 CHIMNEYS 1943 catlmata ef coal rename...........................jS! Piogeta In underground gadBeatloo of coal... au BpoelmeoandyMa of lypienl coal* (Ubic)........... what part doca pglverited coal Bring play la aJrpedtaUoaT Rowley 4 MeChhe................. |( COMBUSTION Burning gu and oil. Rowley, McCabe 4 BkmuiTT........................... .*Tu How to Ogura combuttien. Rowley, McCtb* *8krotakl........................................................ .. Make your furanew-dorign cpadfieaUom w*rk (or you, N. 4. Connor*............................. i-.*30B Undcrtapd (loktn era meant to operala *moko- ftaa. Rowley*McCabe................................ cq^ Waal your overfeed atokc* to ba imekcfrcei Rowley * MiCcbc...... ................................. <||| What part doe* cutveritcd Cos) Bring play (* nlrpeOutkol Rowley * MeCab*................. |* CONOKNSERS #. a. ............................................................... ih How Talleyrand'* eondenon oparaUng * ccrimec varied over the year*. Beeiwtcl, Coaidcy * linneoek.................................... .`Ill OiUng candenneri prevent corroeioo. I), l. Jonee.,.,....................................... 713 Rockland light * Power has eondmeer that travel* oo tralfer*.......................................... *181* " -------- *" --J---r air- ........*416 CONTROLS Automate afarm board helps busy operaIon. J. C. Porter...................................................... *30 Awtoo-atle feeding ef woodwait* replace* band Bring,*avc*fuel. Harry Panidng.....*898 Eleelronis eontrol lor d motor*. O. w, lltumann......................................... TO Hydm-noaumntie tanka mad* men e(Driest by cootrot*. W.L.Wt (charts)...................... *839 liquid rnaoetat dvea emooth *P*ed eontrel. O.l.MePartand........................... *910 - Pacld* Oaa * KNctrii'* Buiioa P-eitcMua dealgand for quick pirk-up.............................. *888 Purchased power held unda aostrol eld* pro*e--plant. P.0.Walleae.. 8800-rpm fiuld driven adiurl Iw,-uvuik . _ to boiler load. j-D. Ro**breugn..............** i exact epeed ____ _____ _______ . Oman............ *6w Working model dmpUBea theory of automatic __ coatra). O.P.Akin*..............ptl *888pl9 *09t Control* **also rttiramCTit* , Cooling tower*--'Tern* Elostrfe Service install* ' outdoor (Ullon........................ .................. *M8 Why does oo* cooling tower uk* more clrf wctKnbneh, Oovnn, tivinalOB. Hkk*. Schaefftr. Bachman, Wenif, Uellon, Dtrs- liRg, Holman................................................... 'll! COSTS AND PERFORMANCE Cooed* Packers' 8t Donlfe** plqot bum* llgnitaatfflelcndcato79%. a,B.Cib*oo.` Capacitor* Improve pi and cut Mate. 1. 8. 9WlUaa.................. ............................... ,........ Orand Haven dlv*l plant brfau capacity t IStSTOhpbyoxtaasloo. J.B.bioa......... MU OktaKomao 3800-k w *a* lurbin* rake* ctatleo eapeWtliy by eOOD-k*. Otok* * Tumy. . '*18 Sinndnrdltallon of.jndustriai steam turWea Isaoaiing. L.B.Newman.................. , IM Tacoma, wash, redevelop* eld hydraprarartkn Nfaqnnlly River by iaatalling 80iO>-k^ ijhcniieii raiodmriic* thdr Custi* Bay, Md. power plant. Diraclory ofManuIXlurtra MldTnr Pyam^^ OttJ............................................ ..Mhl-Juo* w} Drawlqg board Bred with atrip*. T.B.MiBm.-- JCI OIINa ftnn to rrii*>* power cboeUg* by 1688 ............ 168 <|v* cool ttorag* (achilka.................. ............. ' Burning coal on uodcriecd (taken. Rowley, MeCab* * Skraukl....................................... *708 Buraiog coal on overfeed stoker*. Rowley, McCabe * Bkrataki............................ *763 Rurafng pulverised coal. Rowley, MeCebe * akraWa.............................................................*783 The coal cmr (poem)......................................... 463 Coal 6U*of the U.8. (map)............................. 744 Consumption by variou* Industries IP47........... 373 Bleetrapaeumaila system clean coal lamndat, T. oritteki....??............................................ *711 OaeoLoe from ecal developrcenu....................... 374 Granby CooaoUdaiad Mining. Brndtloa * Power Co. burns Ugnito and dUeardad uaek___ coal. A. R. EestcoU................... .*378 How to Bgura uitbonwd eaibon. H.nlehard* (on (chart)........................................ 681 Edward*, Georg*--A lesson la advanccrntfll. >1{ ............................................................................. igT WealthIsa Bow. not (fund....... ....................... iTj When I* a ntlilnia Mt ..................................... ` ELECTRICITY Automatic claetrfeat-llra proustka. 8- MT7 CaleSstingillprfBm'mpi"M)aD<a. B*ti- tr, Coulden, Jloflmaa, Kraus. Hi*,'rt<4 Krtlay, Fladby. Holman, ven DannonbnV- Ceo 1 turn down a aguirttl-cMa WtorJ tl. Uuraot, Aoderoon. IHeka.^wmso. Krt mas. van Danoeoberg, Roberto, Couldei.<^j W*rncr............................ ........................ CaMciter* improv* pi and ut *oeto. .`*188 Andation. Huttbar, Hoffman. Dcmcra, Van Herk................................. Qrauil protoeiioD. J.J.O'Conacr.......... (*) Illustrated. (Ed.) EdllortaL Page Crimp lug* ipearl transformer repair. K. B. Hoffman.. ................. *841 Electrical power demand eoalinwca growth raw.......................................................................804 Electron!* control for do motere, 0. W.___ lleuntaaa....................................... *708 Electronic* (or th* power engineer. F. A.Aenett pt I th* ctaairoo lo electron tube*.................*339 pt 9 electron Bow in conductor*..................... *303 pt 3 dements of electron tube*...................... *881 pt8 pbotoelaclrie lobe*...................................*884 pt 7 adfindeetion and mu tail Induction.. .*709 pt 6 motor* end transformer*,.................... *791 General Electrfo'* new plant at Coaboctoo. Ohio.lorpUitlcsproduction................. *33 Ground halts generator phase tcsL 6. J. KcOcy............................. *699 How toprcso-fltalargc rotor onito chaft. H. L Ren........................... *3*8 Improve the load_pew*r factor. W.C. uloom* Jcl*t(?owcr*cOau8hcctoKchart)................. 719 uctlvc kick checks motor eompoundlng. Mat Pafcahaeh.................................................*483 Umud rheostat give* tmoath ipood oaotrol. O. U MeF*rtond................ *380 Outdoor motor protected by sheet-metal houo- loc. M.H.Fearea............................................ *178 ftrajkl operation of ac gencraton. B. i, Kikkty.................................... *468 rrjss-QtUng rotor* oo thdr shafts by bcatlcg. n L, nw......................... *888 flpsad ef motor driving a fan Inercaced............ *44 Synchronous epeed* of doctrical machines. John Hyam (Power'* Data Shasta) *168 3000-rpm Said driven adjust lead-pump *pi*d to boiler load. J. D. Rcaabrougb................... *19 Tutbiao-generator aidten keep poca with lncraa*ad operation. C. Lynn........................ *8 ward-Ioonard system assure* exaet apod eoatrelfordemetor*. HcnryOman............ .*846 Wctcrrooolad bsuery charging rpeodi proeem. *796 Water rheoatot toad* gencratora for testing. J. L. King.................................. *116 What the ynehnoop* doc* and how It work*. James Wllaw.................................................... *146 Wooden stick* serve aa an expendable clstsh. V, E. Coo.......................................................... 943 lev*torw--frequency ef elevator reps rtnockot, tag. Hicks, fiptoctr, Bryan, Summer, Parmer............................................... *796 ] CNClNEE--DIESEL AND GAS J Diesel endnea--brief............................................ *846 Grand IfavsA diesel plant bring* espiedty tol8470hpbyaiun*lon.J.BiHims.............. *469 i l(& 9** anglncs serve today'* stod mill*. I t W. M. Cl Inn, Jr................... ...................... *88 Hydro, diesel and atnara In oolqe* comhinallon,**rv*Balt River Valley........................... *864 Know your *leev*-bcariog Fuodameatali for topmotohdieMloperatioa.................. *93 loeemoiivo 4808-bp gn* tarblneen trial run*.. *898 Modern bearing materials meet toughdemands of dicsefsarvle* condition*............................... *78 Modem diced engine*--80 year* of pro*rms, L. N. Row1*y......... .......... r,TT*l9-88 rtan for utensions in power-plant deslgo*. n Bltoa Btomit.................................................. *48 HadUl engine* for aluminum work*................... *419 RoarouliUng coellng system Improves engln* operation. D. F, Dialer.................................. *784 ENGINES--STEAM Cornprmelrin ring* extend (lacnwdsten IU*. , J.B. Murphy.............. ...........T............... *300 Haw to *top pound In a Conks tngin*. Hlek*. Morphy. Ifelmer. Oovan, Kllbourn, ltreus, Wilke*. Mrtvtll*. Belton...................................*433 nhoek abaerber smooths governor operation, _ D.J.Drenten......................................... *888 "fjM*--wslking beam Utd timer engine............................................... *84 equipment Buyer*'Guide...................... Adaptor, palnt-em............... Air eompmmar.................... Air conditioner.................... ,,. Mtd-Jue* Is*u* ...................... 79lo . .*383*. *864.716 ir trap, . Mr vents! i|*wiU*.. Alarm, .................... Alarm. Uquld-kvcl.. AmpQBcr, Do........................... Annunciator, pertsbls^laual.. Appliance plug holder............. samarBallast, lamp.............. Da*nrre)l nuasdg draum utilnl,.... Battery charger., Mf -0.. grorinngga*. cridSddeadd....................... gga^arirningg^^ Loecar ball bceaarriing.. grorfagfc roller, tako-up... gUng, eoaveyor. fabrio.. gtittog, rubber-toothed.. Banding bar...................... Banding machine............. . .*829* 789a .. 886 ... 80 ..190b f3Sb f99b 115a II0o S48a Blow torch, gas-eloetrie.... Holla control....................... Boiler, paekase.................... Hollar, portable.................... Heller-raiani units............. Boiler, lhrve-(uei.................. Boiler, wntertubc................. Broke, Rugretle................... Burnor.dusl.fuel................. Cabinet. Instrument............ Cable reel.............................. Cable wrap....................... Calculator,tkhting..'.......... Caliper, vernier.................... t Meltor, diilribullon....... pad lor, motor.................. door operator.............. meet, ebradve................. Chemical reader................... Cjroultbroaker.................. Circuit breaker, air.............. Qroirlt breaker, oil.............. CJamp. armature,................ Oerter, deodorising........ oaner. Bee......................... eaacr. ateare...................... Cleaner, thread.......... Cleaner*, tub*...................... CTomnng--parts ekaoar.... Cleaning set.......................... dutch, air compressor........ t utoh, centrifugal............... utehm. ever-ccnUr.......... uteh, overrunning............ 2Cvo*i1oCison*a1atitnolegrn,..pn...re.o.r..W.....c..l.l.v..*............................ ComCpore*stisnoer,, frreefoane.t.o..r..y.......................... SCoCmConomrirltpsmoo,ruu.hinea*d.Jse,rteiesnetegriiapcalnrinnol.dge...n..c...t..ol..n..o..g...l...in...g. .. Cereprarfng tool................. GompimuntltuoiireBtiotimng*.*.......................... unto cystem............... Condenser, gn*....................... Conductor udl...................... Connector, electrical............. Connector, soldcricsa............ Conoaetor, aolderim wlro.. ConnMtor, wire. *oldrricM.. Contactor, high eurront... Coatoctos, raverting............ Contactor*, aoicnoia............ Control................................ Control, tmpUdyn*.............. Control, center, motor........ Control, combustion............. Control, trace........................ Control, dusMuel-engln*___ Control, dtctronle............... Control, clcctroDls relay___ Control elselroale speed.... Centrel lighting.......... Control, pump...................... Control.eafety, ell burner.. Control, overirwist.............. Control. Uffipcmtm............ Controller, automatic...... Controller, motor.................. Controller oil-burner.......... CCoonnvveeyyoorr,-`bireolul (jehsVta.t.e.r......... CCoonnvveeyyoorr dweithvitmoar.g..n..e..t.*...... SSMSEr3*"" Coupling*, Asilbls....... Coupling, bydratril*............... Coupl og, qiilck-dkeonofct.. CoUuUpUIlIBB*., q, ulck-*oldrad.... Coupling,! CwoouuHrllinngg, 1trip-proof............ Cooling tower....................... Crane control....................... Croaa, hydraulia.................. Crane, bydraulio^perateri . Cra**, porubl*.................... Cuttor*. Hand-powend........ Cylinder opener................... Dnmpr eontrel.................... Diaphragm iraad.................. Diaphragm, reguhttor.......... Deoiltr......... ......................... Die**) starter.................... Differential, synchronous... !?rV.n,.r- sBRdcntato.......... Drill kit, masonry............... Drive, hydro^htav*............ Drive, variable-speed.......... Drives, worm-gear............... saswa-d-, ................ 798e ................ 48 ..188.181,388 809b ..S09e ..668* ...049 860b ..*73e ...661* ..*448* ...133c . .370.884. *6S4a .................... 798a .................... flIOe ..948.368 ....T987b ........ 682a l!6b *438 198* *648 .. 881 . ,*M3 .......... 810b .......... *319 .......... 810* .......... 27e .......... &73b .......... 880b .......... 180 ...114. 369 ..80c. 810a .......... *434 .......... U6e .......... *606 .......... 789* Eketrod*.............................................. 803. 798b. 799 Ejaetrod*. broata............... ............................... tile Meelrode, hard-corfadng.. ................... 38le. 664b Wettrods, olickaecli.......... . Kiectrad*. BneOnBtfetrm--u. a... ............................... Site 808a Bleeirode*, welddiinngg............. ..947,986b. 967*. 387b 176.380a, 861*. 118 O*vior. bucket................ ............................. *41lb (') Illustrated. (Ed.) Editorial. Elevator. Buld^rfv*.............. Bngfn*, diesel......................... Kftgfna.d)rod deetrie plsot- Ettdnro. diesel, borttontol... Knfn*. dlroef. Industrial.... Engtnro--fuel attachment... Bitcntfos bar.. Eitondoa eord. parUble.... Fane, ad bIBow.................. FFa*nn*..DceXntBrifbuJgSeW)......... Fa*, utility......................... Frad ollar, gravity................. Fenders, stoker,................... Feeder, rtbrai'ng................... Filler.................. Filter, airline... Fir* pot, tinner'*............... Fitting*, malltnbl* braaed... Flame faUtira devto*.............. }nadllKht. genera) purpose.. Floor outlet............ Fhienaront fixture................. Fuel additive................. - Funtaee observation door.... Furnace wads......................... Fuse, limetag...................... Saga, ahgffilcal....... ............... M* dial, vacuum................. Oages, gear........................... Oaga glass guard.................... Gagro, pro aura...................... Oe* analyser........................... Gas burner tnfeguard............ Oats operator, portable........ Gear Spaed Reduecr.............. gear*, worn, esdrood........... Oeanootor, vertical............... Generator, air powered.......... Oeoerator. nt.... Generator, hit water............. Generator rot*, dime)............ Generator tet, engine....... Generator rot, motor............. Generator, *l*ai.................... G mentor, synchronous........ Gloves, welding...................... Oeqglc*. rof*ty....................... Gum solvent................. Gun, rnstaiitlng...................... Hand olotmmt...................... Hrotor, deaerating................. ileator, drotrk....................... Hentar.lmmtrden................. Hrotor, epee*.......................... Hater, unit........................... Jlrater, well............................ lata, water....................... Healing eoU*.......................... Hoist, UMtrlr......................... Ilolda, lamp, ad)u*tabls.... !!0PP*?'.*w*ffmPbig............ HumjdlBa, lodoitna)............ Humjdlfla unit...................... HumMIta Indiestor............... Hydraulic unit, midget......... HydrodeetH* unit................. lod estar, bin level................ Indicator. COi .................... Indicator, esrsro smoke........ laatestor, gDw........... ............ Indkntor, Uvd....................... Indicator, ph*a* rotation.... Indicator, pbnro raqoenee... Indicator, prronira................. Indicator, *moke.................... {ndkitor. temperatur*.......... Indies tor, tin-eontent........... Indicator, a-ater-levsl............ InaulaUon. eketriea).......... InsutaUoo, wire...................... Jack, bravy duty................... Jack, hoUl...... Joint, separates.. Joint, rotary prop lomp capacitor.................. Amp. Suoracant.............. lAinp. rafleeter................... Leak detector..................... lifter, ivltj-barttl............. Ughting. emergvMy portal Ughtinn plant, poru&l*... lining, brake shoe............. Lubricant, dry.................... Lubricant, mutU-purpea* g Magnet*. Mato................... li.'ffliib.tt1' Material stackv................. Metal worker, universal- - Meta, air........................... Mster.Caun...................... Meta, therms) demand.. Mtor, vibration................ Mstos, wetthoar................ Moktore remova.............. Motor*, *lr itartiag........... Motor, raped lor................ actor, ebcmlral................. Star, enclosed................. Motor, aiptodenproof....... Motor, mthtetur*............... Motor, oil-wall.................... ..7l7.788e.T99 ........ *674b .......... *319 ..948. *318 664b ..*671 .198b . 948 ,. 486 683a 880a .*603 . 796 .447* 618* .114* .36lb .. ll#e .*663 ..947. 860. TJgb ..*398* . ..*447o ..878a ... 863 832a. 870. *447e ........ 128a ........ 80b . 136c, 868 . .266b ..*609 . .727o .......... *604 .......... 801 .......... 809e .......... *671 .......... 673e ...........660 ...180.181 ... .7!rm ..68,8060 .. 791 .......... *869