ne ie ee EE! Se eee ee EER: Vie EN ae de Gy OR POL. ReP ee  e 
ae Bes RBA SS 7 ree ai ange As 
and Resistance of a Galvan c ( 
est figure) to 6 192 Lenz and Saweljev), edie shod force of Daniell’s 
battery is taken as 100. The reason for this small amount of 
variation however seems to be obvious. There are less observa- 
tions recorded as in the other case, and perhaps mainly such re- 
sults which were considered as “reliable,” thus excluding ex- 
— values which, under certain circumstances are liable to 
up. 
“Tf I take from the above table, 9°6¥ as an approximation to 
a true electro-motive force of the battery, the internal resist- 
e of the battery, at common temperatures, would result as 
“967 
0°8865 
from 10-9 to 21°30, or from 1 to 1-954, and this from some other 
=10°9, and the internal resistance would appear to increase 
of electro-motive force, and internal asi external resistance, on 
the other side, since the simple formula of Ohm does not detail 
what is constant, and what undergoes variations in different 
de 
egr' 
What this reason is I.am still at a loss to know. I hold that 
tro-motive forces and resistances, to unknown extent, and 
varying widely according to cnpeanetiad circumstances. 
Taste VI. 
Battery, zinc in diluted sulphuric acid; gas coke in properly eeeaaied. — of 
bichromate of potash. Both liquids had been used once 
Rheo- Com- Tan- Tat. — values of Rheo- Com- Tan- Int. Mean values of 
chord. pass. gent. resist. resist. |chord. pass. gent. vena int. resist. 
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