60 Prof. EZ. N. Horsford on Gilycocoll, 
in per cent. expressed the above determinations correspond 
ith 
wit E. ee | iV. v. 
Carbon, 22°91. 22°25... 
Hydrogen, G68 15:66: ames Caos Whtw oay ih 
Nitrogen, seater (RR Gott. ic eclitededdante 
Sulphuric acid, .. 24-62 24:62 2420 24-40 
These numbers give the formula, 
3(C, H, NO,, HO)+2(S0,, HO). 
The juxtaposition of the estimated per cents. and analytical 
results follows :-— 
| ‘Theory. Experiment. 
Carbon, - - Sp ue ke me QUAY, soe, 72 22-29 22:58 
Hydrogen, See eek ieee! Pane an. a 1) 5-26 5°62 
Nitrogen, ree ee ee oes, viee,. 42 13-00 13:31 
xygen, + ae ees ee eee bP. 34-69 34:03 
Sulphuric acid, - - - 2 ¢ = 24:76 24-46 
cobs 3231 100-00 100-00 
completely analyzed. They were prepared in small portions 
while seeking to obtain a neutral sulphate of hydrate of glyco-_ 
coll; and it was not until the capacity of this body to combine 
with others of such different nature, and in such varied propor- 
tions became fully apparent, that the existence of so complex 
and unusual compounds was believed. 
The crystallized salts were for the most part groups of elon- 
gated prisms. 
Basie Sudphate of Glycocoll. 
(b.) 3G1, 250,, HO. : 
The constitution of this salt differs from that of the preceding in 
the amount of water. As both of them were dried in the air over 
sulphuric acid, and suffered no change, this difference is attrib- 
utable doubtless to the degree of concentration, or difference of 
temperature. It will be observed that it corresponds precisely ~ 
with a basic hydrochlorate (d), whose constitution is given on 
page 380 of the last volume. 
With chlorid of barium, 0:2182 grm. of crystals, gave 0°1940 
grm. sulphate of baryta. 
In per cent. sulphuric acid 27-74. 
This corresponds with the formula 
3(C, H, NO,)+280,+HO, 
which requires 27-87 parts in 100. As the probable rational con- 
stitution of this salt the following is submitted : 
(Gl, 80,+Gl, HO)+Gl, SO,. 
