3H THOMPSON YATES LABORATORIES REPORT 
Solutions of Potassium Chloride 
Number of Experiment 
Ew 
Ea 
k 
n 
n 
Therefore k is 
equal to 
Experiment (a) 
0-109 = 
1-28 
1 
1-28 
(b) - ... 
o-4 0 7 = » 
2-55 
1 
2 
1-27 
(c) 
0-640 = „ 
4-40 
1 
? 
no 
*? = log. 1 (approx.) 
-L« n 
It may truly be said that the data from these experiments, arranged in this 
manner, need little commentary. 
The tale which they tell is evidently a simple one, each electrolyte relating it? 
not very different variant. 
All these electrolytes, NaCl, KC1, BaCl z , CaCL_, LiCl, NH 4 CI, produce an effect 
upon the value of the injury current which is mainly dependent upon their concen- 
tration ; and the effects of different concentrations are in each case united by a simple 
law which is apparently different for different electrolytes. 
The general form of the law is constant throughout the series — 
Eft) , k 
TT = lo §- n 
.La n 
it would seem, however, that there is a value of ' k ' proper to each electrolyte. 
The determination, therefore, of this value in each case becomes a matter of 
importance. 
The experiments, the records of which are briefly given in the data of the 
tabulated lists below, were performed to determine in the case of each electrolyte this 
value ' k ' ; it being considered temporarily of greater interest to devote time and 
material to this cause than to the further exploration of the action of other electrolytes. 
The electrolytes already examined, although all belonging to the same group, 
chlorides, are sufficiently well known to have materially different influences upon 
biological phenomena, to make even their agreement in this manner an anomaly 
difficult of explanation upon any other than purely physical lines. Besides, the same 
general statement has been found possible as a description of the action of a quite 
different substance NaOH * although in this case the form of the concentration law 
has not yet been determined. 
* See preliminary communication, Proc. Roy. Soc, f>. 67 
