370 Prof. E. N. Horsford on Gilycocoll, 
If this be regarded neutral, Boussingault remarks, the body 
without water would be C, H,3NO,. 
The investigation undertaken at this period (1838) was re- 
sumed in 1840, ’41,* when, from the same chemist, a new for- 
mula, obviously based wpon a conscientious trust in the results 
of analysis, was produced. 
Meanwhile, Mulder} had obtained the same body with Leucin, 
by treating glue with caustic potash. His analysis led him to the 
formula C,H, N,0O,. With protoxyd of lead it lost two atoms 
of water. Its composition would then have been C,H, N, 0; 
+2HO, the two atoms of water being replaceable by two 
atoms of protoxyd of lead. This formula differs from that of 
Boussingault, chiefly in that it is about two-thirds as large. In 
that of Boussingault, an equal loss of water was, however, re- 
placed by three atoms of protoxyd of lead, instead of two. — 
With the gelatine-sugar-nitric acid, (acide-nitro-saccharique ; 
leim-zucker-salpetersaure,) Mulder obtained a compound with 
baryta, of unusual constitution, which he expressed by the fol- 
lowing formula— 
BaO, C, H, N, O,)+2(BaO, NO, ). 
His formula for gelatine-sugar-nitric acid, is 
C,H,,N,0,,=C,H, N, 0,42NO,4+2HO, 
while that of Boussingault, for this compound, was 
,H,3N,0, ,=C, H,,;NO,+NO,+2HO. : 
_ These differ from each other in the relative and absolute quan- 
tities of hydrogen and oxygen, and yet not so widely but that 
the want of correspondence might be attributed to slight im- 
purity of substance. 
Boussingault analyzed a compound of this acid with oxyd of 
copper, of the following constitution :— 
C,H,,N,0,,+2Cu0= 
: C,H,,NO,,NO,)+(2 CuO, HO). 
At a temperature of 165°C., [329° F.] this compound lost 
17-71 per cent. of water, leaving 
C, H,,;NO,NO, +2 CuO. 
Deducting the two atoms of oxide of copper, there remains 4 
bod »4 NO. 
 Fexa 4 
In this condition of the question, as to the constitution of gly- 
cocoll, the investigation was resumed by Boussingault. He anal- 
yzed the body itself, and several most interesting compounds 
of it with oxyds of copper, lead and silver, nitric acid and nitrates 
of metallic oxyds. F'rom these he derived the formula 
C,,H,, N,0,,+3HO, 
* Ann. de Chim. et de Phys., 3d Ser., T. i, p. 257-270. 
t Nat. en Scheik, archief, 1838, p. 146, 
