in the Electrolytic Discharge. 

 Efr. 1. 



393 



+ 1 



12 



5 



27 



3 



11 



44 



16 . 



41 



7"5 52-5 



{a) 



(c) 



(0- 



0') 



(A) 



(0 



(6) 



(d) 



(/) 



26 



9 



trace 



19*5 



32 



17 



34 



i - 



The electrochemical actions on the analyzers a, b were too 

 small to allow of a definite opinion being formed as to dissym- 

 metry in the parts of the field surrounding them ; but in the 

 parts of the field c, cl, e,f, and- g, h, dissymmetry was most 

 distinctly indicated by differences in the magnitudes of the 

 electrification of the same sign on the several analyzers in 

 opposite but corresponding positions. Taking the correspond- 

 ing parts of the field where the greatest dissymmetry would 

 appear to exist, the negative electrifications on g and h were in 

 the proportion of 1" : 3' 6, while the + on the same plates were 

 as 1-9 : 1. 



In connexion with these experiments, I would note one or 

 two other observations not directly connected with dissym- 

 metry. The relation which I have already shown to exist 

 (Proc. Roy. Soc. 1881, p. 435) between the shape of the 

 boundaries of the electrochemical deposits (i. e. where the 

 chemical effects of the electrifications meet the unaffected 

 surface of the analyzer) enables the directions of the lines of 

 force to be determined in the several parts of an electrolytic 

 field, unless it is very small in intensity. The lines across the 

 field cut by the analyzers g, I, h were thus shown to be parallel 

 with the longer edges or sides of the silver plates ; and in the 

 immediate neighbourhood of i, j, and k the lines were approxi- 

 mately in the same direction; but surrounding the plates c, d y e, 



