360 



Mr Townsend, Electrical Properties of [Nov. 22, 



insulated quadrants, and n. 2 the deflection per minute when the 

 inductor is connected to the insulated quadrants. 



The relative value of « x and n, 2 in absolute units of quantity 

 was 12 : 135, so that 



po — p _ 12?^ 

 p 13'5?i 2 " 



We thus obtain the following numbers showing the connection 



between 



Po-P 



and p , so that 



Po-P 



portional to the densities of the electrification 



is (within 5 per cent.) pro- 



(16) Similar values were obtained for p u — p and p for the 

 oxygen given off from the same electrolyte by a current of 14 

 amperes. A different method was used in this case, which did not 

 require an inductor. When the tube G (experiment § 10) was 

 being filled with a charged gas, which enters with an electrification 

 p and escapes with an electrification p, the quantity p — p can be 

 obtained by observing the rate (% per minute) at which the spot 

 of light moved on the electrometer scale, when the tube is full of 

 the charged gas, and the stream kept running through it. The 



mean density of electrification in the tube is practically -^-= — , 



and was obtained by blowing out the charged gas, and observing 



the deflection n 2 which is proportional to x V, where V is 



