144 DR. B. D. STEELE, DR. D. McINTOSH AND DR. E. H. ARCHIBALD 



transferrers were attached to the open ends of the main apparatus by pieces oi india- 

 rubber tubing, t and t'. 



Fig. 5. 



In carrying out an experiment the method of procedure was as follows : The 

 apparatus was placed in the vacuum vessel and held rigidly by a clamp which 

 grasped the tube P. The open ends of the transferrers T and T' were then closed by 

 rubber tubing and glass plugs, and a tube filled with phosphoric oxide was attached 

 to n. The stop-cock w with the cathode attached was then removed and a third 

 transferrer (not shown in the figure) inserted in the tube P. The acetone was then 

 placed in the vacuum vessel and solid carbon dioxide added till the temperature had 

 fallen to the desired point. The outside arm of the third transferrer was provided 

 with a filter of glass wool and reached to the bottom of a vessel containing 10 cub. 

 centims. more of the solution than was necessary for the electrolysis. After the 

 whole of this liquid had been forced into the apparatus by blowing air from a rubber 

 bellows into the vessel containing the liquid, the transferrer was removed and the 

 stopper w replaced. 



Before commencing the experiment three absorbers had been filled with distilled 

 water and weighed. The transferrer T was next attached to one of these in the 



