116 



and 215 was set apart for analysis. The numbers obtained lead to 



the formula C 4 H 3 O 2 [ O 4 , as will be seen from the following per- 

 C 8 H,Oj 



centage table : 



Theory. Experiment. 



I. II." 



C 16 ____ 55-17 54-31 55-58 



H 14 .... 8-04 8-20 7-97 

 8 . . . . 36-79 



100-00 



I also made a determination of the acids by heating a weighed 

 quantity of the ether with hydrate of baryta in the usual manner. 

 The quantity of sulphate of baryta obtained indicated 2-2 equivalents 

 of acid for one equivalent of the substance analysed. The excess of 

 acid was probably owing to the presence in the ether of a trace of 

 free butyric acid. The following equation will explain the reaction 

 which causes the formation of this compound : 



^4 ^4 j p TT f\ 1 C 4 H 4 1 



C 4 H 3 2 l0 2 + U ^ l0 2 =C 4 H 3 2 Lo 4 +AgCl. 



A S J C 8 H 7 OJ 

 Cl 



In many reactions chlorine replaces, and is replaced by, H + O 2 ; in 

 this it is replaced by the group C 8 H 7 O 2 (equivalent to one atom of 

 hydrogen) +O 2 . 



This ether, which I may call butyroacetate of glycol, has a bitter 

 pungent taste. It is insoluble in water, but soluble in alcohol. It is 

 specifically heavier than water. It is a very stable body, solution of 

 potash, even when boiling, effecting its decomposition with difficulty. 

 I have no doubt that many analogous compounds may be prepared 

 in the manner I have just described. 



Action of Chloracetine of Glycol on Ethylate of Soda. 

 In the hope of forming a compound intermediate between diace- 

 tate of glycol and diethylglycol, I resolved to try the action of chlor- 

 acetine on ethylate of soda, thinking that probably the body in 

 question might be generated by the following reaction : 



C 4 H 4 ] p TT ^ C 4 H 4 1 



C 4 H 3 S L 0,+^ 2 =C 4 H 3 2 L 4 +NaCl. 



C < H J 



