14 



ROYAL SOCIETY OF CANADA 



tension and compression is proportional to the applied stress, and there 

 is no appreciable departure therefrom up to or near the yield point. 

 3G 36 



Go 



3 



ISO 



^ TurrxJti muruiCes 

 O Go /SO 2^0 SCrou/nS 



I CjndixxJjjOTv O/Tudj 'rcudjuxZCoru loss CAjyrxre^ 



JT StJT€/S'5- sXJrcujurv CAjuruCy 



2Zr *SCres3- CcTrte CAJcrrire/ 



JET Ol^^erueci» thjè/r-nrnjcûj-turrxjo cajl/W€/. 



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The microscopic investigations of Mugge,* Ewing and Eosenhain * 



and others also strengthen this view, for they have shown that until the 



^ Mugge " Ueber neue Structurflachen an den Krystallen dcr srediegen 

 Metalle." Nachricht. d'er k. Gessell, der Wissen zu Gottingen; Mathphysc. 

 Klasse. *899r Heft I. 



* Bwiinig and Rosenihain "The criystajlline structure of Metais." Bakeriaai 

 Lecture, Transaction Royal Society, 1900. 



