115 



addition of water ceases to increase. The whole is then well washed 

 with water, dried by means of chloride of calcium, and distilled. 

 Almost the entire quantity passes over between 144 and 146C. 

 A portion of liquid prepared in this manner gave the following 

 numbers on analysis, which leave no doubt as to its identity : 



Theory. Experiment. 



C 8 .. .. 39-18 39-01 



H 7 ____ 5-71 5-83 

 O 4 ____ 26-14 



ci.. .. 28-97 ; ;,;..: 



100-00 



The reaction which gives birth to this body may be thus ex- 

 plained : 



I have made a determination of the vapour-density of chloracetine, 

 and obtained results confirmatory of the formula I have given for 

 this body: experimental vapour-density 4-369, calculated 4*231 for 

 4 volumes. I have also ascertained that oxide of ethylene is formed, 

 and not glycol, when this substance is acted upon by a solution of 

 potash. The following equation will explain the reaction : 



ci 



Action of Chloracetine of Glycol on Butyrate of Silver. Formation 

 of Butyroacetate of Glycol. 



Equivalent quantities of chloracetine and butyrate of silver were 

 exposed in a balloon with a long neck to a temperature ranging be- 

 tween 100 and 200 C., till all the silver salt had been converted into 

 chloride. The product was then digested with ether, filtered, and 

 the filtered liquor submitted to distillation. As soon as all the ether 

 had been driven off, the thermometer rose rapidly to 180, and be- 

 tween that temperature and 215 almost the entire quantity passed 

 over. This was fractioned, and the portion distilling between 208 



