64 Prof. E. N. Horsford on Glycocoll, 



With these, no formula embracing palm it in ic acid and glycocoll 

 has been found. The formula 



requires 51*31 per cent, ofVcarbon and 11-16 per cent, hydrogen, 

 which would correspond with the carbon, but not with the hydro- 

 gen determinations. 



Glycocoll and Bi-chlorid of Platinum. 



Gl, PtCl 3 , 2HO. 



When to a concentrated solution of glycocoll in water, a con- 

 centrated solution of bi-chlorid of platinum is added, and then 

 absolute alcohol drop by drop, the solution becomes turbid, and 

 in a very short time, regular cherry-red crystals attach themselves 

 to the sides of the vessel. Or if the concentrated aqueous solu- 

 tion be evaporated over sulphuric acid, after a time, groups of 

 prismatic crystals are formed. 



They become instantly covered with a bright colored crust 

 upon exposure to the air, manifestly with the loss of water. 



0-3679 grm. substance gave 0872 grm. platinum. 



In per cent, expressed =3303, which corresponds with the for- 

 mula C 4 H 4 N0 3 , PtCl,+2HO, 

 which requires 33-26 per cent, of platinum. 



Glycocoll and Chlorid of Barium. 



Gl, BaCl, 2HO. 

 To obtain this salt, equivalents of crystallized chlorid of bari- 

 um ( = BaCl + 2HO) and glycocoll were dissolved in the least quan- 

 tity of hot water, and suffered to crystallize quietly in the cold. 

 In a few moments the salt crystallized in groups of short prisms 

 of extreme beauty. None were sufficiently perfect to admit ol 

 measurement. They appeared to belong to the rhombic system,, of 

 the combination a> P. Px> . ao P oo. 



The addition of alcohol to the solution changed the form to 

 that of slender flat needles. 



The salt is soluble in water, more so in hot than in cold, tastefi 

 bitter, gives neither acid nor alkaline reaction, does not deliquesce 

 or change upon exposure to the air. 



Dried over sulphuric acid, 0-6715 grm. substance gave 0*3833 

 grm. sulphate of baryta, =55-34 per cent, of chlorid of barium, 

 giving the formula C, H 4 N0 3 , BaCl, 2H< >, which requires 55-31 



Glycocoll and Chlorid of Potassium. 



GL KCL 



This compound was prepared by dissolving glycocoll and chlo- 

 nd of potassium in water, and evaporating over sulphuric acid. 



