182 
Proceedings of the Roycd Soeiety 
that the increase of resistance is proportional to the charge, without, 
however, detailing any particulars. 
In the experiments now to he described, the palladium wire was 
charged by being made the negative electrode- of an electrolytic cell. 
The wire was removed from time to time, and its resistance and 
mass both measured. The palladium was purified of the hydrogen 
by being heated to a white heat in a Bunsen flame — a method 
which, though very effective, was ratlier destructive to the pal- 
ladium, which, after several chargings and dischargings, became 
rent and fissured in an extraordinary manner. 
The following are the results of three successive experiments made 
with the same wire before it became so disfigured as to be practically 
useless for the purpose. The mass is in grammes, the resistance in 
ohms : — 
Experiment I. — November 27, 1882. 
Mass, .... 
3-562 
3-5702 
3-5766 
3-5835 
3-586 
Ptesistance, . 
•193 
•2215 
•2515 
•288 
•289 
Experiment II. — November 28, 1882 
Mass, . 
3-559 
3-567 
3-569 
3-572 
3-576 
3-581 
3-583 
3-583 
Resistance, . 
•1865 
•204 
•218 
•232 
•2575 
•275 
•283 
•283 
Experiment III. — November 29, 1882. 
Mass, . 
3-557 
3-562 
3-563 
3-565 
3-573 
3-579 
Resistance, . 
•1835 
•1885 
•195 
•206 
•242 
•270 
The first member for each row refers to the pure uncharged 
palladium. Hence, dividing every number by the first in the 
corresponding row, numbers representing the proportional increase 
in the mass and resistance will be obtained, and the different experi- 
ments made directly comparable. In this way the following table 
has been prepared, the numbers of the first column referring to the 
experiment from which the other corresponding numbers have been 
derived. The numbers of the first row are of course common to all 
three experiments ; — 
