196 On tlu Effects of CJianges of Temperature oil Metal Wires. 



DIAGRAM V(r). 

 Co/pper i pure > 



10 



20 



fO J0 40 30 60 TOP 00 



60 



Amplitudes. 



60 



Curve 



ao-4C.i IB 



/ait. vibrator. 



DIAGRAM 



Copper (pure>. 

 30 4O 30 60 70 



Curve 



I; temp 



2+U). 

 4 ' 



00 



vibrator. 



