and some of its Products of Decomposition. 61 
Basic Sulphate of Glycocoll. ? 
(c.) 3(Gl, HO)2S0,, HO. 
A mixture of the salt (b) with the previously described one 
(a), doubtless gave the crystals for the following determination : 
03076 grm. gave 0:2300 grm. sulphate of baryta, which gives in 
per cent. expressed, sulphuric acid 25-65 ; corresponding with the 
above formula. ‘The following is more rational. 
(Gl, SO,, HO+Gl, HO)+(Gl, HO+SO, HO). 
This requires 25-47 parts of sulphuric acid in 100. 
(d.) 2(Gl, HO)+S0,. 
Another salt gave by combustion with chromate of lead,— 
From 0-3039 grm., 0:2872 grm. carbonic acid, and 0°1680 
gm. water; which expressed in per cent., give carbon 25°77, 
hydrogen 6:01. These numbers correspond with the formula 
aC, H, NO,, HO)+S0,, 
which requires carbon 25-26, and hydrogen 5:26. 
Gilycocoll and Sulphate of Oxyd of Ethyl. 
wicks Gl, HO, AeO, SO,. 
- The particular circumstances of the formation of this salt, be- 
yond those already given, viz. a solution in hot spirits of wine, or 
in water to which absolute alcohol was added, are not asce: d. 
With chlorid of barium, 0°6470 grm. gave 03036 grm. sul- 
phate of baryta; which in per cent. give of sulphuric acid 17°27. 
This quantity of acid corresponds with the formula 
Ceeare NO,, HO-+C, H, O, 8O,, 
Which requires 17-62 per cent. of sulphuric acid. 
Nitrate of Gilycocoll. 
Gl, HO+NO,, HO. 
b] 
or without water, as a base, united with hydrated nitric acid, or 
as a salt with nitrates of metallic oxyds. — 
Braconnot obtained this compound by direct combination of 
hitric acid with glycocoll prepared from isinglass. _ pemenane 
procured it directly from hippuric acid, employing nitric inste 
of hydrochloric acid for its decomposition. 
