﻿286 



Mr. R. D. Kleernan on the JRecombinatl 



ton 



The depth of the chamber was '5 cm. and the area ionized 

 256 cm. 2 



Readings with the a rays from uranium could be taken by 

 sliding a plate covered with a thin layer of uranium oxide 

 into the chamber through a side door. 



The chamber was made gas-tight by waxing the joints. 



The observations were carried out in the same manner as 

 before. 



Since air containing a small proportion of a gas heavier 

 than air greatly increases the lack of saturation when the 

 mixture is ionized by a rays, air bubbled through a volatile 

 liquid has been used in several experiments. 



In Tables V. and VI. are given some of the observations 

 made. Observations made with the a rays from uranium 

 have been placed alongside for comparison. 



Table V. 



X Rays. 



a Rays. 





Volts 

 per cm. 



Ratio. 



Lack of 

 saturation 

 and time 



ofleak. 



Yolts 

 per cm. 



Deflexion. 



Lack of 

 saturation 

 and time 



of leak. 



Atr. 



1200 

 8 



Ill 



105 



13 sec. 

 5 p. cent. 



1200 



400 



80 



20 



8 





Air bubbled 



through chloroform 



for 1 minute. 



8 

 1200 



8 



1200 



20 



114 

 123 

 113 

 122 

 117 



13 sec. 

 7 p. cent. 

 4 „ 



2182 

 2058 

 1853 

 1624 

 1451 



10 sec. 

 6 p. ceut. 

 15 „ 



26 „ 



38 ,. 



Air. 



1200 



8 



122 

 114 



16 sec. 

 7 p. cent. 









Air bubbled 



through carbon- 



tetrachloricle 



for 1£ minutes. 



8 

 1200 



8 

 1200 



129 

 142 

 129 

 141 



14 sec. 

 9 p. cent. 



700 



80 

 20 



8 



2794 

 2369 

 2067 

 1845 



15 sec. 

 15 p. cent. 

 26 „ 

 34 „ 



Air. 



20 

 1200 



20 

 1200 



126 

 132 

 126 



129 



3 p. cent. 



1200 

 400 



80 

 8 



2796 

 2599 

 2069 

 1306 



7 p. cent. 

 26 „ 

 53 „ 



Air bubbled 



through ether for 



1 minute. 



1 



1200 

 20 



8 

 1200 



152 

 142 

 138 

 152 



7 p. cent. 

 9 „ 



