THE MECHANICAL EQUIVALENT OF HEAT. 
461 
Table XXIX. —(continued). 
Reading 
Em. 
Time. 
Time over 
interval. 
Revolu¬ 
tions. 
Time of 
revolution. 
Rate. 
seconds. 
thousands. 
seconds. 
296 
1760-9 
363-7 
59 
1753-6 
297 
1770-2 
364-2 
298 
1779-7 
364-7 
299 
1789 
365-1 
61 
1820*3 
Mean 
• • 
364-43 
• • 
• • 
29-95 
346 
2231-0 
470-6 
73 
2219-9 
347 
2240-9 
470-7 
348 
2250-5 
470-8 
349 
2260 
471 
75 
2286-7 
iMean 
470-78 
• • 
30-02 
396 
2719 
487-5 
87 
2686-6 
397 
2729 
488-1 
398 
2739 
488-5 
899 
2749-3 
489-3 
89 
2753 
fMean 
• • 
488-35 
30-02 
446 
32.33-9 
514-9 
103 
.3219-3 
447 
3244-8 
515-8 
448 
3254-9 
515-9 
449 
3265-8 
516-5 
105 
3286 
Mean 
• • 
•515-78 
■■ 
1 
.30-02 
Owing to the breakage of a -w’ire in the clock and chronograph circuit, the records of the times 
from 449 to 539 are so uncertain that we have decided to omit them. 
