86 ON THE INTERNAL POLARISATION OF NERVES. 



experiments, I calculated the mean of the first six 1 . The numbers 

 thus obtained are 



No. Strength of the Current. Sc. 



1 i -45 



2 i-6 -77 



3 2-2 -96 



4 2.8 1-25 



5 3-3 i-54 



6 3-8 i-7 



7 4' 2 '"9 1 



8 4-6 2-18 



9 5 2-29 



10 5-4 2-47 



11 6-9 3-36 



12 8-i 4-05 



13 9-1 4-61 



14 9-9 4-97 



15 10-5 5-36 



16 ii 5-72 



17 11.5 5-99 



18 11-9 6-26 



19 I2'6 6-69 



20 13-2 7-07 



21 13-5 7-26 



22 13-8 7-61 



23 14 7-71 



24 14-5 8.02 



25 15-1 8-15 



26 15-5 8-4 



27 15-9 8 ' 6 7 



28 16-1 8-87 



From these determinations it follows that within the strengths of 

 current employed in my experiments, the polarisation of the nerve is, as 



near as may be, directly proportional to the strength of the polarising 

 current. 



2. The dependence of polarisation on the duration of 

 closure of the polarising current. 



To investigate this question I used a current of the same strength 

 in all the experiments, and passed it through the nerve for unequal 

 lengths of time, namely for periods of I, 3, 5> IG J & Ct seconds, and in 

 some experiments of 240 seconds. At the end of each period the 



1 Experiment 7 I have not used in these calculations, as in it the individual deter- 

 minations were too few. 



