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obtninetl soiiie nickcl froni ,I osepli \Vlirirton iind, iiftcr considcrnble cspcrimciitrition, c1cvclol)cd n superior nlloy contriining So/, nickcl. This ship ?-as ncvcr built, but Nr. Ritchie, of the Canridinn Copper Co., WIS iiiisious to find n IISC for his, a t tlirit t,iinc, great nickcl supplies, nnd hc got into toucli first iinsr~cccssfiilly with Krupp of Esscn, rind tlicn with Jlr. Schncidcr :it Crcuzot, niitl nftcr espcriiiient~ ciirried out in Englrintl and piiblislicd by J'niiics Ziilry in ISSD, thc U.S. Govcrniiicnt iidoptcd nickel steel for :iriiiour plntcs, :i very striking csriiiiplc of conor pcr-.crsioii of :in itlciilistic idcn to niilitiiry purposes. Sincc tliiit t,iinc an cnoriiioiis iiiiioiint of work lins bccn tlonc iii exploring t,lic pliysicril, ~h~niiciil, iind mcclianicnl propertics of t,lic iiiriny iiickcl iron alloys ; t,lic inodeni (lciniind for iiicreiisctl spccd hy water, Iiintl, and riir Iiiis dcnirintlcd tlic cniployincnt. of cvcr stronger and lighter inritcriril i i n t l wlicii wc csiiniinc the coinposition of the Iniiteriiils IVC now inp ploy for 1)riilding t.lic grcritcst britlgcs, st,rcriiii-liiicd t,riiins, iintl tlic rails t,licy run on, tlic grent.cst, ships, iiiotor-cars of all kinds, iind the iiiricliincry of neroplniics, ivc fiiitl progrcssiivc1y niorc and niorc nickcl risctl i n their coniposition, Nr. C:iiillnuinc foiintl by using 11icli~l stccl :illoy with over 35% of niokcl, it could producc iilloys like Tnvrir iind ISIinviir wliicli posscss r i ncgligiblc cocflicicnt of cspnnsion, thus cnzibling tiieasiiriiig rods nncl trips rind pirts of clocks and othcr pliysiciil :ippiir:it.ils to bc produced ; :I very inucli larger atltlitioii of nickel gives :HI nlloy co1itiii1iiig froni W % to SO% of Iiicliel :id possessing Iiiglily incrciisetl nirignctic propcrt.ies which hnve inndc iind fiicilitntcd tlic coiistriiction of uiitlcrground teleplionic ciiI)Ics, nntl such nlloys are used i n currcnt trrinsforincrs rind tclcplionc iipprirritiis. JIr. Guillct first pul)lislicd t.lic rciiiiirl;iil)lc rcsii1t.s whicli lie obtnined of t,hc cffect of nickel on cast, iron. l'liis
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