222 Professor How on the Ethers and 



( 4*175 grains, dried in vacuo, gave 

 I. < 6*182 ... carbonic acid, and 

 I 1-960 ... water. 



172 ... dried in vacuo, gave 

 674 . . carbonic acid, and 

 240 ... water. 



ra- 

 il .{ 7- 

 I 2- 



4-22 grains, dried in vacuo, gave with soda lime, 

 4-09 ... platinum salt of ammonia. 



3*147 ••• dried in vacuo, gave 

 1-872 ... chloride of silver. 





Experiment. 

 1. II. 



40-38 40-46 



Calculation. 





Carbon, 



40-42 



C i. 



96 



Hydrogen, 



5-21 



4-81 



5-05 



H 12 



12 



Oxygen, . 



.. . 





33-70 



° Ti 



80 



Nitrogen, 





6-08 



5-89 



N 



14 



Chlorine, 



14-72 





14-94 



CI 



35-5 



10000 100-00 100-00 237-5 



the rational expression of the above resolves itself, for sufficient 

 reasons, into this formula : — 



C 4 H 5 O, C 12 H 4 N0 7 , 2 HO + HC1. 



for I shall presently shew, that the hydrated comenamic ether 

 is readily obtained from this substance in a pure state, by re- 

 moving the hydrochloric acid with which it is here combined. 



The hydrochlorate of comenamic ether dissolves with ease 

 in warm water, and the solution deposits first comenamic acid, 

 and finally, after long standing, some needles, which are pos- 

 sibly the ether itself. It dissolves to a large extent in cold 

 alcohol and ether, and these fluids leave it by spontaneous eva- 

 poration, as a finely crystallized mass of long radiated silky 

 needles. Alkalies also readily take it up, chloride of the base 

 and the simple ether at once resulting from their contact. 



Hydriodate of Comenamic Ether. — I have obtained indica- 

 tions of the existence of a compound similar to the preceding, 

 with hydriodic acid. It was obtained by the action of iodide 

 of ethyl on comenamic acid in absolute alcohol ; the reaction 

 took place in a sealed tube in the oil-bath, heated for some 

 time to about 300° F. When cold, the contents of the vessel 



