76 MR. JOULE ON THE MECHANICAL EQUIVALENT OF HEAT. 
Table V. (Continued.) 
No. of experiment 
Total fall of 
Mean 
Difference be- 
tween mean of 
Temperature of apparatus. 
Gain or loss of 
and cause of change 
of temperature. 
weights in 
inches. 
temperature 
of air. 
columns 5 and 6 
and column 3. 
Commencement 
of experiment. 
Termination of 
experiment. 
heat during 
experiment. 
12 Radiation 
0 
51-416 
0-483 
50-860 
51-006 
0-146 
gain 
12 Friction 
1293-25 
52-057 
0-551 
— 
51-006 
52-006 
1-000 
gain 
13 Radiation 
0 
51-747 
0-246 

51-456 
51-547 
0-091 
gain 
13 Friction 
1293-25 
52-403 
0-389 
— 
51-547 
52-482 
0-935 
gain 
14 Friction 
1293-45 
52-703 
0-054 
+ 
52-294 
53-221 
0-927 
gain 
14 Radiation 
0 
53-201 
0-050 
+ 
53-221 
53-281 
0-060 
gain 
15 Friction 
1293-93 
53-644 
0-088 
+ 
53-281 
54-183 
0-902 
gain 
15 Radiation 
0 
54-061 
0-145 
+ 
54-183 
54-230 
0-047 
gain 
l6 Radiation 
0 
51-492 
0-318 
+ 
51-821 
51-800 
0-021 
loss 
16 Friction 
1292-83 
52-011 
0-242 
+ 
51-800 
52-706 
0-906 
gain 
17 Radiation 
0 
51-350 
0-055 

51-272 
51-319 
0-047 
gain 
17 Friction 
1292-83 
52-057 
0-264 
— 
51-319 
52-268 
0-949 
gain 
18 Friction 
1292-84 
52-576 
0-147 
+ 
52-268 
53-178 
0-910 
gain 
18 Radiation 
0 
52-906 
0-276 
+ 
53-178 
53-187 
0-009 
gain 
19 Radiation 
0 
50-119 
0142 

49-928 
50-027 
0-099 
gain 
19 Friction 
1292-33 
50-760 
0-272 
— 
50-027 
50-950 
0-923 
gain 
20 Friction 
1293-01 
51-004 
0-147 

50-370 
51-345 
0-975 
gain 
20 Radiation 
0 
51-798 
0-385 
— 
51-345 
51-482 
0-137 
gain 
21 Radiation 
0 
52-194 
0-646 

51-482 
51-615 
0-133 
gain 
21 Friction 
1292-83 
52-383 
0-298 
— 
51-615 
62-555 
0-940 
gain 
22 Friction... 
1292-33 
50-389 
0-374 
50-332 
51-195 
0-863 
gain 
22 Radiation 
0 
50-958 
0-239 
-1- 
51-195 
51-199 
0-004 
gain 
23 Radiation 
0 
51-218 
0-498 

50-636 
50-804 
0-168 
gain 
23 Friction 
1294-69 
51-848 
0-546 
— 
50-804 
51-800 
0-996 
gain 
24 Friction 
1294-33 
50-582 
0-286 
+ 
50-435 
51-302 
0-867 
gain 
24 Radiation 
0 
51-223 
0 092 
+ 
51-302 
51-328 
0-026 
gain 
25 Radiation 
0 
51-665 
0-406 

51-190 
51-328 
0-138 
gain 
25 Friction 
1294-33 
52-281 
0-464 
— 
51-328 
52-306 
0-978 
gain 
26 Friction 
1294-34 
52-652 
0-105 
+ 
52-306 
53-208 
0-902 
gain 
26 Radiation 
0 
52-957 
0-259 
+ 
53-208 
53-225 
0-017 
gain 
27 Friction 
1293-83 
49-463 
0-277 
+ 
49-293 
50-188 
0-895 
gain 
27 Radiation 
0 
50-068 
0-142 
+ 
50-188 
50-233 
0-045 
gain 
28 Radiation 
0 
48-420 
0-145 
-h 
48-537 
48-593 
0-056 
gain 
28 Friction 
1294-33 
49-132 
0-093 
— 
48-593 
49-486 
0-893 
gain 
29 Friction 
1294-84 
49-142 
0-092 
48-773 
49-696 
0-923 
gain 
29 Radiation 
0 
49-783 
0-053 
— 
49-696 
49-765 
0-069 
gain 
30 Radiation 
0 
50-251 
0-422 

49-765 
49-894 
0-129 
gain 
30 Friction 
1294-33 
50-597 
0-246 
— 
49-894 
50-808 
0-914 
gain 
Mean Friction ... 
Mean Radiation... 
1293-532 
0 
0-00743 
0-0048 
+ 
0-9157 
0-0606 
gain 
gain 
1 
2 
3 
4 
5 
6 
7 
