Phil. Mag.S.6.Vol.8.Pl XIV. 
EXTENSION (In divisions of scale.) 
= (2) ao Lm © 
14 
3 
12 
iT] 
fe) 
TIME (/n hours) 
23 
p WIRE. 
LOAD 700 GRAMs. 
EXTENSION AND RECOVERY OF LEA 
sae] 
S 
VE 
UR 
Mintern Bros. lith. 
