and some of its Products of Decomposition. 339 



disappeared. In its place were urea and uric acid, both in 



vious day. 



as compared 



If we deduct, as has already been shown, half an atom of 

 grape sugar from two atoms of hydrated glycocoll, we obtain 



urea: 



C„ H (0 N 2 8 -C 6 H fl 6 =C 2 H 4 N 2 O a . 



It is conceivable that glycocoll should thus divide, and that 

 the sugar should disappear in the products of oxydation. 



By treating it with nitric acid, with this view, no such result 

 was obtained. Concentration or dilution, a strong heat or a mod- 

 erate and long continued heat, gave no urea and no oxalic acid. 

 One of the products is noticed on page 329. 



Uric acid (as bibasic) may be contemplated as a cyanurate of 

 glycocoll : — 



C It H 4 N 4 6 =C.N,0„C € H t N0 3 . 



If benzoic acid be capable of withdrawing glycocoll from uric 

 acid, the remaining member, in the presence of water, would 

 furnish the materials for carbonic acid and ammonia : 



C. N, 0, + 9HO=6CO a +3NH 



3* 



— • W M ^ J ■ it F 



No great confidence can be placed in a single result of this de- 

 scription. Still whatever worth it has. seems to support the sug- 

 gestion of Ure. Uric acid is found where the products of de- 

 composition are too imperfectly oxydated* Those who suifer 



persons. Ex- 



ercise by increasing the supply and furthering the action of oxy- 



gen, more perfectly secures the oxydation ot the products or de- 

 composition. 



Could a part of the products destined to consume oxygen be 

 withdrawn, the usual supply through the lungs might be adequate 

 t0 the complete oxydation of the remainder, and thus the forma- 

 tion of uric acid concretions be rendered impossible. Glycocoll 

 l s one of these products. If united to benzoic acid, a consumer 

 °f oxygen is withdrawn from the blood. 



A series of experiments upon given diet, with and without 

 benzoic acid, could not fail to solve this important question. 

 . With this investigation, and particularly with the products of 

 decomposition of glycocoll, which so far as here recorded, may 

 b e considered rather as qualitative than quantitative, it is our pur- 

 Pose to proceed with as little delay as possible. 



Not, 



mproper 



-'«te. — u may nor oe unyiupci tu o«.^ •«*« , \ i- 



PWs his own time and that of his assistants, and the appliances 

 of his private laboratory, in great part, in labors to ascertain 

 Methods of oh** n » n A PYnflHitious nreoaration, that he may spare 



* Liebig's Thier Chimie, 2e. Ausg. s. 125. 



