1887.] Mr W. Peddie on Electrolytic Polarization. 
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Monday , 16/A May 1887. 
Lord MDABEN, Vice-President, in the Chair. 
The following Communications were read : — • 
1. On the Increase of Electrolytic Polarization with Time. 
By W. Peddie, B.Sc. 
(A bstract.) 
This paper dealt only with cases in which the electromotive 
force used is insufficient to produce decomposition. In such cases 
the electrodes act as condensers. P>ut the observed law of variation 
of current-strength with time is not exactly that which holds in 
the charging of ordinary condensers. The author showed that the 
deviation could be largely accounted for by the continual increase 
of transition resistance, the existence of which he proves in a 
separate paper on that subject. 
2. On the Blood of Myxine. By Professor D’Arcy W. 
Thompson. 
3. On the Larynx and Stomach in Cetacea. By Professor 
D’Arcy W. Thompson. 
4. On Transition Resistance at the Surface of Platinum 
Electrodes, and the Action of Condensed Gaseous Films. 
By W. Peddie, B.Sc. (Plate VII.) 
The question of the existence of true transition resistance at the 
surface of certain electrodes in given liquids has been in debate 
for many years, but has never yet been conclusively settled. It is 
admitted universally that in certain cases such resistance does 
occur, as, e.g., when a non-conducting oxide is formed on the surface 
of the metal ; but the point in dispute is whether or not it occurs 
