20 
Proceedings of the Royal Society 
and weighed on the balance before and after each experiment, with 
results given on table A. The kathode metals lost nothing in 
weight. 
In the case of distilled water, the loss was from pure oxidation 
in presence of the nascent oxygen. 
The generally curved contour of some of the outer streaks was 
doubtless consequent on the mode of emission of the current from 
the round surface of the electrode, influenced by the resistance 
effects of the distilled water. 
The sketch is from careful drawings, made at the time of 
observation, and gives a fair representation, though the lines 
were perhaps not always so well defined. These effects were 
obtained when using distilled water (possibly owing to its very 
great resistance) ; when the salt water was substituted the 
curved streaks were not easily distinguishable, to some extent 
owing probably to the greater, and more rapid oxidation, and the 
much smaller resistance. The mixed ferrous and ferric oxides in 
this minute state of subdivision appeared to manifest magnetic 
properties, the polarised particles acting in magnetic fashion 
