50 SELECTED ARTICLES, 
(CO + Cl) + HO=ClH + (CO + 0.) 
(C 2 2 +Cl) + HO = ClH + (C 2 02 + 0.) 
(C 2 2 +NH 2 ) + HO=NH 3 + (C 2 2 +0.) 
(C 2 2 + N 2 H 4 ) + H 2 2 =N 2 H 6 + (C 2 2 + O 2 . ) 
Finally, in oxamide and in urea do we find characters which 
belong to the chlorides, that is to say, the power of combin- 
ing with compounds of the same order as themselves, and of 
a neutral nature. To be convinced that it is so, it suffices to 
examine the following formula: 
Oxamethane, (C 2 .0 2 , NH 2 ) + (C 2 3 H 4 C 4 , HO.) 
Oxamide. Oxalic Ether. 
Urethane, (C 2 2 , N 2 H 4 ) + (C 2 4 , H 8 C 8 , H 2 2 .) 
Urea. Carbonic Ether. 
It is evident, according to these formulae, these combina- 
tions correspond to those which common salt forms with the 
sugar of raisins or diabetes. 
Thus, without pretending that these different examples are 
interpreted in a manner conformable to truth, we may say 
that if we admit an electro-negative body, NH 2 , in the ami- 
dets, we attain to an explanation of a great number of facts, 
without going out of the ordinary circle of chemical concep- 
tions, and that with a little reflection we may be led to fore- 
see the existence of a great number of new combinations. 
Journ. de Pharm. 
