[m'lennan] 



ON ELECTRIC CHARGES 



9B 



drawn from these numbers are shown in Fig. VII. From these curves 

 it will be seen that in both cases the tray containing the salt slowly ac- 



quired a positive charge. The rate at which this charge was acquired, 

 moreover, was greater when the needle was positively charged than when 



TABLE VI. 



it was negatively charged, but this difference was probably due to the 

 small conduction current which must have existed in the air between the 

 needle of the electrometer and the free quadrants. 



