460 
MR. E. H. GRIFFITHS ON THE VALUE OF 
Table XXIX.^—Series II. J 23. September 12, 1892. 
Weight of water (in vacuo) — 139'776 grms. 
Clark cells, n = 3. Nos. (37, 38, 39), (40, 41, 42), (43, 44, 45). Temperature 15°-21 C. 
External temperature. 241'2 A = 300 E = 19'’‘260 C. Pressure = ‘78 milliiu. 
Calorimeter cooled to 10°'10 C. before commencing experiment. Connections 
reversed at t. 
Reading 
Efli. 
Time. 
Time over 
interval. 
Revolu¬ 
tions. 
Time of 
revolution. 
Rate. 
seconds. 
thousands. 
seconds. 
86 
- 9-5? 
87 
- 1-7 
88 
6 
89 
14 
7 
21 
Mean 
126 
.305-2 
314-7 ? 
127 
313-2 
314-9 
128 
321 
315 
129 
329-5 
315-5 
17 
3.54-2 
Mean 
315-03 
• • 
30-01 
176 
714-2 
409 
177 
723-6 
409-4 
178 
731 
410 
179 
739-2 
409-7 
29 
753-4 
fMean 
409-52 
30-06 
216 
1050-3 
336-1 
217 
1058-7 
3.36-1 
218 
1067-3 
336-3 
219 
1076 
336-8 
40 
1120 
Mean 
• • 
336-33 
• • 
• • 
30-01 
256 
1397-2 
346-9 
257 
1406 
.347-3 
258 
1415 
347-7 
259 
1423-9 
347-9 
50 
1453 
Mean 
• • 
347-45 
• • 
30-02 
