155 



upon the hydrochlorate, I was surprised to find that this body 

 retains hydrogen and oxygen in the proportion in which they 

 exist in water, which cannot be separated by prolonged contact with, 

 or by repeated distillation over, anhydrous baryta. 



The analysis of the free base has given the following result : 



Carbon . , 

 Hydrogen 

 Nitrogen 



Formula of M. Cloez 



C 2 H 4 NO. 



31-58 



10-52 



36-84 



New formula 

 C 4 H 10 N 2 2 . 

 30-76 

 12-82 

 35-90 



Analysis. 

 Mean. 

 30-67 

 12-97 

 36-32 



These numbers appear to me in favour of the formula which I pro- 

 pose for formylia ; there remains but little doubt that acetylia and 

 propylia are analogously constituted. 



There remains yet to find the last term of the series, the tetre- 

 thylene-diammonium compound. Up to the present moment I have 

 only established by experiment that the three lower bases are 

 powerfully attacked by bibromide of ethylene, a non- volatile com- 

 pound being produced possessing properties in every respect analo- 

 gous to the character of tetramethyl- and tetrethylammonium. 



If further experiments confirm the hypothesis which I have 

 advanced, the action of ammonia on bi-bromide of ethylene would 

 give rise to four compounds analogous to the bases which I have 

 obtained by the action of bromide of ethyl. 



Bromide 

 of ethyl- 



ammo- 



nium. 



Bromide 

 ofdiethyl--,^ 

 ammo- 

 nium. 



Bromide of 



triethyl- 



ammo- 



nium. 



Bromide of 

 tetrethyl- 



ammo- 



nium. 



Bibromide of ethy- ^. 

 lene-diammonium. 2 



H 



H 2 I 

 H 2 J 



Br 2 . 



Bibromide of di- 

 ethylene-di- N 2 - 

 ammonium. 



Bibromide of 

 triethylene-di- N 2 

 ammonium. 



x *ft *\s 



(C W X,. 

 H^ j 



(c 4 H 2 4 )n 



(C 4 H 4 ) I 



/p TT \if ? r ' l 2 > 



^H 4 J 



"(C 4 H 4 )1 



< C 4 H 4)" Ur 

 (C 4 H 4 )" r" 2 ' 

 .(C 4 H 4 )"J 



The conception of diammonium-compounds has suggested to me 



Bibromide of 

 tetrethylene-di- N 8 

 ammonium. 



