410 



Mr. V. E. Pound on the Secondary Bays 



Table X. 

 Hydrogen in Apparatus. 



Carbon electrode at 



temperature 24° C. 



Voltage on carbon 



= -84 volts. 





.5 d* 









hSS 









s3 S 



_d 







'^J> &H 



bp 





* m 





? 







_ ^j.,3 





o § 



© p 



O "" *" 



*T % 



■^ .^ 



b e8 





P i 3 



So 



Ph 



H 2*3 



D 



o 



mm. 



min. 



amp. 





•006 











-429-5 



•002 



10 







- 230-5 



•001 



20 







-205 



<-001 



40 







-202 



<-ooi 



60 







-]96 



<-ooi 



90 







-194 



<-0QI 





lo 



- 66 



<-ooi 





4-5 



- 47-5 



<-001 





9 



- 48-5 



<001 



, ,. 



18 



- 49 



<001 





24-5 



- 47 



Table XI. 

 Hydrogen in Apparatus. 



Carbon electrode at 



temperature —192° C. 



Yoltage on carbon 



= -84 volts. 



From these results the values of the secondary radiation 

 from the carbon at different temperatures in oxygen and 

 in hydrogen were deduced as with the air, by taking the 

 difference between the final rates of charging of the polonium 

 without and with the magnetic field applied. These are 

 given in Tables XII. and XIII. 



Table XTI. 



Fresh Carbon in Oxygen. 

 Secondary Radiation from Carbon and Oxygen Layer. 



i 



[ Temperature ol Carbon... 



J Secondary Radiation 



115° 

 -124-7 



23° -7S C 



121-5 -160 



192° 

 193 



