OF EXPANSION OP SUPEEHEATED STEAM. 
595 
Experiment III. 
0'545 grain of water introduced into globe. 
Time. 
Temperature 
of oil-bath, 
Fahr. 
Cathetometer, 
in inches. 
Column of 
mercury, in 
inches. 
Temperature 
of air, 
Fahr. 
Kemarks. 
h m 
3 55 
299 
16-05 
20-26 
59 
Barometer read 3013 inches, or, corrected 
4 0 
300 
16-05 
20-26 
to 32° F., 30'06 inches throughout the 
4 5 
300 
16-05 
20-26 
experiment. 
Lower file-mark read 21 '86 inches on the 
4 33 
250 
15-33 
20-98 
cathetometer. 
4 40 
250 
15-32 
20-99 
60 
4 45 
250 
15-34 
20-97 
5 3 
200 
14-66 
21-65 
5 10 
200 
14-66 
21-65 
5 14 
200 
14-65 
21-66 
61 
5 32 
150 
13-05 
23-26 
Condensation in globe. 
5 37 
150 
13-10 
23-21 
5 43 
150 
13-05 
23-26 
Summary of Kesults. 
Temperature, 
Fahr., 
corrected. 
Mean column 
of mercury, 
in inches. 
Mean column, 
corrected to 
32°. 
Total pressure 
in globe, in 
inches. 
Volume of 
globe corrected 
for expansion 
of glass, in 
grs. of water. 
Pressure of 
vapour of mer- 
cury, in inches. 
Pressure of 
steam, in 
inches. 
Value of E. 
302-88 
251-64 
200-74 
150-18 
20-26 
20-98 
21-65 
23-25 
20-03 
20- 78 
21- 49 
23-12 
10-03 
9-28 
8-57 
6-94 
3045-5 
3043-4 
3041-2 
3039-1 
0-174 
0-066 
0-024 
0-008 
9-86 
9-21 
8-55 
6-93 
466-85 
451-94 
109-74 
Experiment IV. 
0'53 grain of water introduced into globe. 
Time. 
Temperature 
in oil-bath, 
Fahr. 
Cathetometer, 
in inches. 
Column of 
mercury, in 
inches. 
Temperature 
of air, 
Fahr. 
Eemarks. 
h m 
12 0 
300 
16-62 
20-63 
65 
Barometer read 30-17 to 30-18 inches during 
12 5 
300 
16-62 
20-63 
experiment, the corrected reading being 30 09 
12 15 
300 
16-61 
20-64 
inches. 
Lower file-mark read 22-80 inches on the cathe- 
12 44 
250 
15-93 
21-32 
65 
tometer. 
12 51 
250 
15-92 
21-33 
1 5 
250 
15-92 
21-33 
1 38 
200 
15-27 
21-98 
1 45 
200 
15-28 
21-97 
1 52 
200 
15-28 
21-97 
66 
2 35 
150 
13-95 
23-30 
2 47 
150 
14-00 
23-25 
3 0 
150 
14-01 
23-24 
3 5 
150 
14-00 
23-25 
3 20 
165 
14-80 
22-45 
3 23 
165 
14-79 
22-46 
67 
