4'9% 



17-9% ^£+> 



12-6% 



8-9% 



Exp. 326 



-±. Exp. 929 

 ' '(4-9%) 



Exp. 928 

 (1%) 



Exp. 927 



(12-6%) 



•010 



12345 etc. minutes 



Fig. 3.— Series II. Relative increase and decrease of injury current by CH01 3 vapour at different strengths. 

 Ordinates 1 mm. - 0-0001 volt. Abscissa? 1 mm. = 15 seconds. 



