316 



Mr. C. Russ. 



[May 21, 



It was thus found that : — 



(1) The accumulation at an electrode varies in degree with different species 

 in the same electrolyte. 



(2) The accumulation at an electrode varies for the same species in different 

 electrolytes. 



Table I. 



+ 



j Na 2 . S0 4 . 



- '+ 

 Na, N0 3 . 



— + 

 Na 2 . HP0 4 . 



— +. , < 

 Na. CI. 





# 



# 



* 







# 



# 



# 



# 



Staphylococcus aureus ... 



Feeble 



Feeble 



Not tested 



# 





# 









Nil 



Nil 



Nil 



Feeble 

 # 







>> 



# 



# 





# 



# 



* 



# 





# 



# 



# 



# 



Streptococcus 



Nil 



Not tested 



# 



# 





* 



* 



# 





The acid radicle column = anode. 



base „ = cathode. 



* indicates aggregation. 



| = marked aggregation. 



Table I contains the results of a number of observations made with different 

 bacteria in four electrolytes which all contained the same basic element 

 (sodium), but different acidic elements. 



A. similar set of observations was carried out with four electrolytes having 

 the same acid radicle (S0 4 ), but different basic elements, and the results 

 collected in Table II. 



Table II. 





- + 





— + 







Zn. S0 4 . 



Ko. S0 4 . 



Mg. S0 4 . 



(NH 4 ) 2 . S0 4 . 





Nil 



# 



Nil 



Nil 





>) 



# 







Staphylococcus aureus . . . 



)) 





? * ' 



Feeble 







Nil 



? * 



# 







* 



Nil 



Nil 







* 





Feeble 

 # 





Feeble 



* 





# 













The streptococcus in Table I died before Table II was begun. 



The ? was necessitated by oxide formations referred to under choice of electrolytes. 



