On the Effects of Changes of Temperature on Metal Wires. 195 

 DIAGRAM V(). 



O /Q so 3O 9 4O 5O 6O 7O 



60 



DlAGBAM V(6). 



Copper <joure>. 



5 



* 



BO 



SO 



60 



60 



Cun-e 



\,zUb.</jbnzor. 



C., 3 - 



