8 G. F. Barker—Physiological Chemistry. 
paring the constitution of its amids with that of urea. Having 
shown that the formula of ethylic trioxethylenamate* (tngly 
colamic ether) is ((€,H,©)OEt)’,N, it follows that trio 
enammonamid (triglycolammonamid) prepared from it by 
action of ammonia, is simply ((€,H,0@)H,N)',N; being am 
aa 
when the hydryl atoms of the acid are replaced by 
tensity and the new compound yields well cryste mee 
stances with acids. While therefore, no more acid moi 
can be held after the introduction of nitrogen atoms 
fore, yet the same number are now held more firmly. 
* (€,H,) being the positive bivalent radical ethylene, the negebv® 
corresponding to it is (C,H, ©)", oxethylene (formerly elyeoU)i 
ethylenic (glycolic) acid is (©, HO) i ct oxethylenamic (giyeotaid 
(€2H,0) | OFF and tri-orethylenamic (-eiyeclamic) sed 
(€,H,9 a 
N 4 ((€,H,9)0H) . 
(€,H, 9) 0H)’ 
