and Resistance of a Galvanic Circuit, 387 
sistance, or the liquids. Now it is eee from the fact of the 
cst te r wire aie heated much less t nthe platinum, and in- 
or platinum =100+0'1861 t.° Cels., for copper pepsin 9 
t.° Celsius), that oe ratio of increase of resistance of the er 
wire should a r to be eomenoeacg smaller than that of the 
tery, by combining the highest direct intensity with some lower 
Ones, or any other specific. “method” certain experimenters dus 
fer, is rather arbitrary, since Ohm’s formula knows of no 
expected to get more reliable results, especially by throwing out 
those observations in which the platinum wire sti “been 
heated very much. But these calculations seemed to run per- 
fectly wild, giving much greater values than ever before. Com- 
bining; for instance, the intensity 0-115 with 100 centimeters 4 
platinum wire, in table I, with each of the following three i 
ac = , the values for the in- 
tensities, after the formula R 
Sistance (3° a gave an increase from 1: 7°38, thus far greater 
than anybody ‘could attempt to explain by way of influence of 
temperature. I now became pretty much convinced that there 
with decrease of intensity, aud a reason very much more power- 
ful than the influence of temperature, and one able to conceal, by | 
Way of its great ratio and the errors of observations, compara- 
tively slight differences in the ratio of increase of resistance of 
—— and copper as proceeding from the influence of temper- 
"On the other hand, those great and much varying values 
Seemed to pronounce my observations as perfectly worthless. I 
