G2 Prof. E. N. Horsford on Glycocoll, 



We prepared it by dissolving glycocoll in -strong nitric acid, 

 and setting the solution over sulphuric acid to crystallize. Oc- 

 casionally large tabular crystals, apparently belonging to the 

 monoclinate system, are formed. Not unfrequently, however, 



the salt crystallizes in needles, especially if the fluid has been 

 warmed. 



They do not deliquesce upon exposure to the air. They taste 

 and react acid. They were dried over sulphuric acid. Combus- 

 tion with chromate of lead gave the following results : — 



I. 0-4509 grm. substance gave 0-2954 grm. carbonic acid, 

 and 0-1963 grm. water. 



II. 0-4968 grm. substance gave 0-3122 grm. carbonic acid 

 and 0-2054 grm. water. 



Two analyses, according to \ r arrentrapp and Will's method, 

 gave respectively 10-04 per cent, and 10-64 per cent, of nitrogen. 

 From this it is evident that this method cannot here be employ- 

 ed :— a fact with regard to nitrates, to which attention has already 

 been drawn by the chemists just mentioned. 



Failing in this, a determination was made by the quantitative 

 method of Prof. v. Lie big. 



The proportions of carbonic acid to nitrogen in four tubes, 

 were : 17 : 9, 14 : 7, 10 : 5, 24 : 11 ; or, together 65 : 32=2 : 1. 

 In per cent, expressed the above determinations give 



i- ii. in. 



Carbon, - - - 17-86 17-15 . . 



20-50 



Hydrogen, - - - 4-83 4-59 



Nitrogen, - 



• • • ♦ 



These correspond with the formula 



C 4 H 4 N0 3 , HO+NO s HO, 

 as will be seen by the annexed estimates and results of analysis. 



Carbon. - 



Hydrogen, 



Nitrogen, 



Oxygen, 



13d 10000 



100-00 



as 



Boussingault by drying the salt at 110° C. (230° F.) obtained 



N0 3 , NO, 



Oxalate of Glycocoll. 



HO 



An aqueous solution of glycocoll with oxalic acid, evaporated 

 upon a watch glass, crystallizes in rays reminding one of a cross 

 section of wavelhte. If alcohol be added to a solution of glyco- 

 coll m oxalic acid, the latter in excess, the solution becomes 

 milky, with the separation of oxalate of glycocoll. If added in 

 small quantities and successively, it crystallizes with the beauty 



