THE MECHANICAL EQUIVALENT OF HEAT. 
437 
Table XVIII. — Experiments indicating that tr^ — constant. 
{t = time of rising 1 millim. r = rate of revolution in seconds.) 
Date, 1892. 
Weight. 
Exp. 
Range in 
millims. 
E,„. 
Time in 
seconds. 
r. 
t. 
tr^ 
XlO-3. 
Remarks. 
July 12 . . 
104-015 
1 
1 
276-296 
900-5 
29-19 
1 Prelim 
inary. 
Outer temp. 286 5 E,,,. 
„ 12. . 
2 
276-296 
9129 
28-76 
f Stirrer 
not in ad 
justment. 
„ 12. . 
3 
279-294 
832-3 
27-.34 
55-49 
1134 
„ 13. . 
4 
279-294 
533-9 
31-71 
35-60 
1135 
„ 13. . 
5 
279-294 
845-6 
27-27 
56-37 
1143 
„ 13. . 
6 
279-294 
907-0 
26-62 
60-47 
1141 
„ 13. . 
7 
279-294 
466-9 
32-95 
31-13 
1114 
Motor very irregular. 
14. . 
8 
279-294 
803-0 
27-70 
53-53 
11.38 
„ 14. . 
9 
279-294 
628-2 
30*05 
41-88 
1137 
1134 
.luly 14 . 
194-200 
10 
281-292 
642-1 
.30-13 
58-37 
1596 
Outer temp. 286-5 E„,. 
„ 14. . 
11 
283-290 
507-4 
28-01 
72-49 
159.3 
„ 14. . 
12 
281-292 
514-8 
32-38 
■ 46-80 
1590 
„ 14. . 
13 
283-290 
618-3 
26-33 
88-33 
1511 
„ 15. . 
14 
281-292 
711-9 
29-15 
64-72 
1603 
„ 15. . 
15 
280-293 
643-7 
31-87 
49-37 
1603 
„ 15. . 
16 
282-291 
648-5 
28-li 
72-06 
1600 
1600 
July 18 . . 
194-190 
31 
283-290 
483-1 
28-62 
69-01 
1619 
Outer temp. 285-5 E„. 
July 15 . 
2.39-73 
17 
283-290 
439-6 
.30-78 
62-74 
18.30 
Outer temp. 286-5 E„,. 
„ 15. . 
• « 
18 
283-290 
628-2 
27-44 
89-74 
1850 
„ 16. . 
19 
283-290 
544-6 
28-73 
77-80 
1846 
1842 
July 18 . . 
239-27 
30 
283-290 
606-0 
27-69 
86-57 
1839 
1843 for Avt. 239-73. 
July 16 . . 
285-37 
20 
282-291 
767-0 
29-10 
85-22 
2100 
Outer temp. 286-5 E„.. 
„ 16. . 
21 
280-293 
909-2 
30-98 
69-95 
2080 
16. . 
22 
283-290 
793-7 
26-60 
113-4 
2134 
„ 16. . 
23 
28.3-290 
711-2 
27-57 
101-6 
2129 
„ 17. . 
24 
282-291 
841-1 
28-39 
93-45 
21.38 
17. . 
25 
282-291 
703-8 
30-02 
78-20 
2116 
17. . 
26 
282-291 
735-3 
29-68 
81-70 
21.35 
2119 
July 17 . . 
275-40 
27 
283-290 
608-9 
28-82 
87-00 
2081 
Outer temp. 286 5 E„. 
„ 17. . 
• • 
28 
282-291 
6.35-5 
30-61 
70-61 
2025 
„ 18. . 
1 
29 
282-291 
821-5 
28-39 
91-27 
2089 
2065 
1 
