﻿46 Prof. E. Edlund's Experimental Proof that 



obtained of 41*1 divisions. When, on the contrary, there was 

 no discharge between / and g, the deflection only amounted to 

 2*3 divisions. Moreover the deflection diminished when the dis- 

 tance between the knobs was lessened. 



Series 2. 





Knobs of brass atfg. 





Experiment 6. The knobs at a distance of 3 millims. Forma- 



tion of sparks. 





A. 



B. 



263-5 



300-0 



264-5 



299-5 



265 ° Mean . 



299-7 



Mean . 264-3 





Experiment 7. The knobs removed 



from each other. No 



formation of sparks. 





A. 



B. 



297-0 



299-0 



297-0 



299-3 



297 ' 3 Mean . 



299-2 



Mean . 297'1 





Experiment 8. Like experiment 6. 





A. 



B. 



2670 



299-5 



263-5 



299-5 



262-0 Mean . 



299-5 



Mean . 264*2 



The deflection obtained with brass knobs (35*4 divisions) was 

 thus somewhat smaller than when the knobs were of iron. The 

 deflection obtained when there was no formation of sparks be- 

 tween / and g was, on the contrary, as ought to be the case, the 

 same as before. 



Series 3. 



Knobs of tin at fg. 



Experiment 9. The knobs at a distance of 3 millims. Forma- 

 tion of sparks. 



A. B. 



266-5 299-0 



264-0 298-5 



269 '° Mean . 298-8 



263-3 



Mean . 265-7 



