164. EXPERIMENTS ON THE SPECIFIC 
The water sent up was 0.666 grains.—The 
weight of 100 cubic inches of steam, and the 
specific gravities are calculated at a temperature 
of 60° and pressure of 30 inches of mercury. 
Atmospheric air being 1. 
Twelve Experiments. 
Pressure 
Temperature 
Weight of 100 
cubic inches 
Specific 
gravity. 
inches. degrees. grains. 
19.45 204 19.44 626 
19.05 198 19.71 .636 
18.95 196 19.79 .638 
19.70 222 19.70 635 
19.80 224 19.57 631 
19.80 230 19.72 636 
19.80 230 19.72 .636 
20,20 243 19.60 632 
20.25 244. 19.56 631 
20.15 236 19.47 .628 
19.90 229 19.59 632 
19.85 228 19.77 .637 
———— ee 
30.39 19.74 233.77 
Mean calculated from mean length of tube filled 
A 19.62 gr. 
with vapour and mean temperature and pressure 
.633 s. g. 
When the deduction is made for the expan- 
sion of glass and mercury from the given mean, 
