728 



could be obtained. Chloracetine has since been prepared by 

 M. Lorenzo in a manner analogous to that by which I prepared its 

 isomer, namely, by treating glycol with chloride of acetyle. These 

 compounds find their places in two very remarkable series of iso- 

 meric bodies, proceeding from ethylene (olefiant gas) and ethylidine 

 (C 4 H 4 ?), supposed to be contained in the chloride of ethylidine 

 derived from aldehyde. The following is a list of these compounds : 



Aldehyde 



Ethylidine. Ethylene (olefiant gas). 

 C.H.(0 C 4 H 4 



Oxide of ethylene. 



C 4 H 4 2 



Chloride of 



ethylidine . C 4 H 4 Cl a 

 (Wurtz) 



Geuther . . 



Chloracetine 

 of ethylidine 

 (Simpson) 



(Wurtz and 

 Frapolli) 



44 



C 4 H 3 OA0 4 

 C 4 H 3 OJ 



CH0 



C 4 H 5 



C 4 H 4 



(C 4 H 5 ) 2 



C 4 H, 



}^ Diethyl- glycol 

 U * (Wurtz). 



Acetal 

 (Dobereiner) 



I am still studying the action of acids on glycol, and hope soon to 

 be able to communicate further results. The foregoing experiments 

 were performed in M. Wurtz' s laboratory. 



The Society then adjourned over the Easter recess to Thursday, 

 May 5. 



