"wentieths 
= 
contraction 
DIAGRAM, showings exp th S162 
of 
herage ee ae conan per degre ie foot. 
00000. 330. 
— #1 (ead | aa 
—— 
| 
| 
T 
| ; 
Cx Panston 
| | 
| 
| 
| 
| 
{100 Feet in length) 
Allea 2 Therniometrical Section corresponding to the latter Ice TO METenG 
Mite ce = 
Cone? ee | 
