146 
MR. DANIELL ON VOLTAIC COMBINATIONS. 
Wishing to ascertain whether any portion of this increased effect were owing to a 
simple increase of conducting power in the electrolyte, or whether it were wholly 
dependent upon the electro-motive force, or increased energy of affinity, I set the 
battery in action with a voltameter included in the circuit, the body of which was 
immersed in water, which could be conveniently raised to the boiling temperature 
by means of a lamp. The observations were commenced at the temperature of 58°. 
Time. 
Interval. 
Voltameter. 
5 min. rate. 
h m 
Cubic inches. 
Cubic inches. 
11 25 
11 30 
5 
65 
6*5 
11 35 
10 
13* 
6-5 
Voltameter heated to 130°. 
11 46 
11 51 
5 
65 
6-5 
Voltameter heated rapidly to 212°. 
11 56 
10 
14- 
7-5 
12 1 
15 
21*5 
7-5 
12 6 
20 
29- 
7-5 
The battery itself was then heated by steam to 135°. 
Time. 
Interval. 
Voltameter. 
5 min. rate. 
h m 
2 10 
/ 
Cubic inches. 
Cubic inches. 
2 15 
5 . 
13 
13 
A cell was then included in the circuit charged with cold standard acid, and without 
any sulphate of copper. 
Time. 
Interval. 
Voltameter. 
5 min. rate. 
h m 
2 20 
Cubic inches. 
Cubic inches. 
2 25 
5 
8 
8 
Cold cell removed. 
2 30 
10 
20 
12 
Cold cell restored with acid sulphate of copper. 
2 35 
15 
295 
95 
The temperature of the battery was then increased to 160°. 
Time. 
Interval. 
Voltameter. 
5 min. rate. 
h m 
2 38 
/ 
Cubic inches. 
Cubic incites. 
2 43 
5 
11 
11 
2 47 
4 
205 
14 
A small portion only of the increased effect would thus appear to depend upon the 
simple conducting power, which alone 
could have any 
influence in the voltameter 
with platinum electrodes ; 
whilst the increased energy 
of the electro-motive force 
