EFFECT OF MAO>'ET]ZATTOX OF TUE FETîMAXENT TWTST OF XTOKEL. .^39 



molooiilos. Thus tlio pormnnont twist would ho afl'ectod by trnnsvorsnl 

 :is well :is 1)\- loiigitii(liii;il iiiuLjiioti/.titioii. In my cxjM'i'iincnts, lr;iiis- 

 \(Ts:il iiingTiC'tizutioii 1)\- 1l;it coil Ik-mI no sensible eft'eet. 



riie ('liaiiii'e oi jn'rinnncnt niii^'nctisni by twistiiio- is nmre eoni- 

 plex in nickel tlinn in iron. Tf we Imve to explain the nitixiinnni 

 (Iccrense in ])erin:inent in:iL!'n*'tisni on \\'ie(l('ni:inn's rlicorx-, we nnisi 

 nssiiine th:it tlie iiiekcl niolccnles n^tîitc only tbrono-]) ;i eert;iin niiiilc 

 l)y twisting, l)nt lieyoiid th;it niigle, tliey move ])nek townrds the 

 orininnl jiosition. 'I'liis we lime no i-iglit to nssuine. It seenis bojieless 

 to find :iny ex])lan:ition of tlie ^':lrio^s relati(^ns ])etweeii twist and 

 mauTieiization in tiTins of* a really satisi'aetorv theory of i-olaling 

 nioleenles. 



