704 



Prof. C. Kinsley 



soft rouge. The potential gradient, which was thus made 

 high, would gradually fall. 



Fig. 10. 



no 



100 

 90 

 80 

 70 



60 



Vso 



30 

 20 















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D£C. 



50. 





















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/ 



















/ 





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/6. 















/ 



/ 



/ 



/ 



















/ 



/ 



/ 





/A/ 



W.&. 













/ 





/ 



/ 

















/ 



/ 



/ 





/> 



A/or. 



33. 



^£. 



4&H/I 



/pr 







/ 



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Oct 



28. 





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ICO 



In general it was also found that the potential gradient 

 shown after rubbing with dry rouge on the buffing-wheel 

 would fall whether the initial treatment was such as to give 

 at first a high value to the potential gradient or not. A 

 particular case is given as an illustration in Table A. 



Table A. 

 Data taken December 1, 1904. — Forty seconds w r as in 

 most cases the time-interval between changes of potential. 











Y. 



d= 100 ju/i. 



Hours after 





/io- 



Y. 



Mi. 



a. 



closing 

 chamber. 



Wt. 



4-1 



107-0 



o 



22 



91-5 



2 



10 



3-9 



74-0 



2 



4 



66-5 



3 



5 



39 



87-5 



2 



20 



78-5 



4 



10 



3 9 



95-5 



2 



•,>•> 



85-5 



5-5 



10 



40 



85-5 



2 



46 



750 



6 



10 



42 



111-0 



2 



36 

 Average... 



925 



84 



9 



5 



10 



3-9 



77-9 



2 





70-0 



19-0 



10 



3-9 



75-9 



2 



12 



68-0 



20-6 



10 



4-1 



83-5 



9 



4 



71-0 



21-2 



10 



3-8 



79-5 



2 



22 



73() 



240 



10 



3-8 



739 



2 



16 



68-0 



24-4 



7 



40 



i 



70 



! 



Average... 



70 



99 







