630 



Prof. W. M. Thornton on the 





Table V. 





Pressures above 



Hydrogen 



Coal Gas 



atmosphere. 



SO per cent. 



15 per cen 



lb. per 6q. inch. 



5'45 amperes. 



6-35 



20 



5-50 



6-40 



40 



5-50 



6-40 



60 



5-60 



645 



80 



5-80 



6-50 



100 



60 



7-0 



GAS 

 PUMP 



FIG.9 



The slight rise is no doubt owing to the cooling effect or* 

 the more rapid gas bombardment at higher pressures. When 



