464 
MR. B. H. GRIFFITHS ON THE VALUE OF 
Table XXXI.—Series IL J 27. September 15, 1892. 
Weight of water {in vacuo) = 199‘674 grms. 
Clark cells, n = 5. Nos. (37, 38, 39), (40, 41, 42), (43, 44, 45), (46, 47, 48), (52, 53,54) 
Temperature 15° C. 
External Temperature 241*1 A = 299*8 E = 19°*258 C. Pressure = *48 millim . 
Calorimeter cooled to 10°*01 C. Connections reversed at t. 
Reading 
E,„. 
Time. 
Time over 
interval. 
Revolu¬ 
tions. 
Time of 
revolutions. 
Rate. 
seconds. 
tlionsands. 
seconds. 
86 
76-7 
7 
22-9 
87 
80-9 
88 
85-2 
89 
89-4 
Mean 
126 
249-7 
173 
13 
223-7 
127 
254 
173-1 
128 
258-4 
173-2 
129 
262-6 
173-2 
15 
290-7 ■ 
Mean 
173-13 
• • 
• • 
29-88 
176 
471-8 
222-1 
20 
457-5 
177 
476 
222 
1 
178 
480-6 
222-2 
1 
1 
179 
485 
222-4 
21 
490-5 
Mean 
222-18 
• • 
30-13 
1216 
651-6 
179-8 
25 
623-2 
217 
656 
180 
218 
660-5 
179-9 
219 
665 
180 
27 
689-5 
Mean 
• • 
179-95 
30-15 
256 
8.34-7 
183-1 
31 
822-4 
257 
839-5 
183-5 
258 
844 
183-5 
259 
848-8 
183-8 
32 
855-6 
Mean 
183-48 
30-22 
