68 



Prof. E. N. Horsford on Glycocoll, 



Glycocoll and Nitrate of Silver. 



Gl,AgO,NO s . 



If the filtrate from a chlorine determination of the hydrochlo- 

 rate of glycocoll be evaporated to concentration, and set aside 

 over sulphuric acid, in a little time tolerably regular crystals of 

 the above salt may be obtained. 



It may be procured by dissolving glycocoll in nitrate of silver: 

 or by dissolving oxyd of silver in the solution of the nitrate of 

 glycocoll. 



Upon melting, it explodes with violence. When exposed .to 



moist air it deliquesces ; though it remains unchanged over sul- 

 phuric acid. 



The salt dried over sulphuric acid, on combustion with chro- 

 mate of lead : — 



I. 0-9300 grm. of substance gave 03550 srm. carbonic acid 

 and 0-1880 grm. water. 



II. 07840 grm. of the same gave 0-2950 grm. carbonic acid 

 and 0-1560 grm. water. 

 III. 0-6469 grm. of the same gave 00258 grm. chlorid of silver. 



In per cent, expressed, 



Carbon, 



Hydrogen, 



Silver, 



giving the formula 



i. 



ii. 



in. 



1011 

 2-24 



10-26 

 2-21 



49-83 



C 



H 4 NO 



, AgO, NO 



as the annexed estimates and results of analysis will show : 





Carbon, - 



Hydrogen, 

 Nitrogen, 

 Oxygen, 

 Ox. silver, 



I 



Theory. 



4 equiv 

 4 " 



2 " 



8 " 

 1 " 



24 

 4 



28 



64 



116 



Experiment. 



10 16 

 J -69 

 11-86 

 26-76 

 40-53 



JO 18 



2-22 



4!V83 



Glycocoll and Nitrate of Copper. 



Gl, HO ; CuO, N0 5 , CuO, HO. 

 This salt was analyzed by Boussingault, and may be consid- 

 ered as a compound of hydrate of glycocoll with nitrate of copper? 

 united to hydrate of oxyd of copper. 



(Gl, HO + CuO N0 5 ) + CuO, HO. 



Glycocoll and Nitrate of Potash. 



Gl, KO, NO 



This salt forms readily from a solution of glycocoll in nitrate 

 potash, upon the addition of absolute alcohol. No quantitative 



made. The above formula is derived from tb* 



analyses on page 



