THE MECHANICAL EQUIVALENT OP HEAT. 
445 
Table XX.—Experiment LII.-LIV. Aug. 11, 1892. The constants are the same as 
for LI. 
Experiment. 
Temperature E^. 
Time. 
Revolutions. 
Time. 
seconds. 
thousands. 
seconds. 
LII. 
403 
10 
0 
15-0 
404 
93-7 
3 
116-4 
406 
281-6 
6 
217-1 
407 
378-5 
10 
352-3 
408 
472-0 
3 
453-4 
409 
465-5 
6 
554-2 
411 
757-4 
9 
655-0 
21 
722-0 
LIII. 
456 
1-0 
3 
36-8 
457 
149-6 
6 
137-4 
458 
297-4 
10 
271-6 
459 
438-5 
4 
405-5 
461 
7320 
22 
673-6 
462 
883-7 
8 
875-6 
LIV. 
507 
1-1 
3 
13-8 
508 
290-5 
10 
247-8 
509 
560-2 
2 
314-4 
511 
1179-9 
20 
580-3 
39 
1215-2 
Method of reducing the results in the above Table. 
The time over any range is the mean time obtained by taking the observations in 
pairs—thus the time over the range 87'5-97'5 is the mean of the times taken in 
rising from 86-96, 87-97, 88-98, and 89-99. Thus each number in column 4 of the 
following Table is the mean of, at least, four intervals of time. 
