DISTRIBUTION OF THE ACTIVE DEPOSIT OF 



F 





1 1 1 — ' — ; 



r\ 



Ai|A! 

 1 1 1 





B 



!' ' 



1 1 



B 



D 



~\. 



Fig. 2. 



number of scale divisions was measured with a stop watch. 

 This range of scale was kept the same for any given experi- 

 ment. A correction for the natural leak of the instrument 

 was always applied. Chis correction was usuall/ a small 

 fraction of th anode activity. 



A typical set of measurements is given below: 

 Box 8 Plates 10 Voltage = 40.4. Dry air over Ho SO4. Set 

 up 2:15 P.M. Oct. 25, 1914. 



Plates removed 9: 01 A.M., Oct. 26, 1914. 



Plates. 



Period. 



Divisions. 



Time. 



Rate. 



.:5906 

 .0168 



Cor. Rate. 



.:3880 

 .0142 



10- 

 10+ 



25.6" 

 9' .W.O" 



60-50 

 60-50 



9: 05 A.M. 

 9: 16 A.M. 



Percentage cathode activity = 96.5. 



