504 Prof. Trouton and Mr. Rankine: Stretching and 
Ae 
Time. Hquation. Experimental. 
0 0 0 
i cai 176 
2 251 231 
3 263 263 
+ 2895 287 
6 316 318 
8 338 341 
10 Be) 3D8 
12 o67 370 
14 376 382 
16 389 390 
20 399 404 
24 410 414 
va) D000 
= : 1 5t+1 
Curve IX. W=140log 0-0945¢41 \ } 
0) 0 0 
1 D4 Dd 
2 8] 80 
3 v9 oe 
ee 112 112 
D 123 122 
6 132 133 
7 139 139 
5 144 146 
3] 151 150 
10 155 155 
12 163 164 
14 170 173 
16 175 180 
18 180 185 
20 185 190 
ea) 250 
The time of stretching was not the same in the two cases ; 
in the first about 45 minutes and in the second 135, so that 
no definite correspondence between the constants can be 
expected. In the first experiments (those done by hand) the 
removal of the load was proceeded with immediately the load 
had been placed on the wire. In the later experiments the 
object was to allow the wire to reach the state of steady flow 
before removing any weight. The wire used in the second 
series of experiments was of rather less diameter than that 
used in the first. 
