produced in Gases by Bontgen Rays Sfc. 431 



Air. 



a. 



p. 



7- 



(3. 



7- 





Leakage 



Leakage 



a 



a 



Atmospheric 



per minute 



per minute 







pressure in inms. 



for 4 volts. 



for 96 volts. 







760 



100 



131 



•132 



•172 



240 



44 



46 



•183 



•192 



190 



40 



39 



•210 



•205 



121 



24 



26 



•197 



•214 



64 



12 



13-5 



•187 



•212 



58 



11-0 



10-0 



•189 



•172 



23 



4-4 



3-75 



•191 



•163 



3-6 



1-2 



1-2 



•339 



•339 



It will be seen from the last two columns of the table that 

 the rate of leak at 4 volts and at 96 volts is nearly propor- 

 tional to the atmospheric pressure. The results obtained at 

 3*6 millim. are not very trustworthy. With lower pressures 

 no appreciable leakage at these two voltages was observed. 



Hydrogen. 



a. 



Atmospheric 

 pressure in mms, 



Leakage per minute 

 at 4 volts. 



2. 



a 



A- 



sj a 



760 





37 



•041 



1-43 



197 





11 



•056 



•77 



66 





4 



•061 



•50 



8 





1-5 



•187 



•55 



With lower pressures no leakage was observed. The rate 

 of leak is at higher pressures somewhat approximately pro- 

 portional to the pressure, at lower ones to the square root of 

 the pressure. 



Oxygen. 











a. (3. 

 Atmospheric Leakage per minute 

 ressure in mms. for 4 volts. 



a 











760 125 



•16 







4-5 



205 48-5 



•25 







3-3 



64 15-0 



•24 







2-9 



2 2-0 



1-00 







•71 



Carbonic Acid. 









Atmospheric Leakage per minute 

 pressure in mms. for 4 volts. 



Leakage per minute 

 for 100 volts. 



760 94 







167 





62 18 







21 





2 not obser 



vable 







2K2 



