and some of its Products of Decomposition. 69 



Glycocoll and Bi-sulphate of Potash. 



Gl, SO3+GI, KO, S0 3 . 



By dissolving bi-sulphate of potash in water and adding a 

 solution of glycocoll, throwing the whole down with alcohol, re- 

 dissolving by heat and setting aside to cool and crystallize, the 

 above salt is obtained in semi-opaque prismatic crystals. 



A single determination from the salt dried over sulphuric acid 

 gave from 6873 grm. of substance 0*6200 grm. sulph. baryta. 

 In per cent, giving sulphuric acid =30-94 The formula 



C 4 H 4 N0 3 , S0 3 +C 4 H 4 NO,, KO, SO 



3; 



uric 



Glycocoll and Bi-chromate of Potash. 



If glycocoll be dissolved in an aqueous solution of bi-chromate 



of potash, and absolute alcohol be added till the liquid becomes 



turbid, and the whole set aside, in a little time crystals will be 

 formed. 



These, even under the liquid, in a few days become decompo- 

 sed, with the deposition of carbon. They were not further ex- 



amined. 



Glycocoll and Urate of Ammonia. 



Gl, U, AmO, U. 



When to a hot filtered solution of urate of ammonia, glycocoll 

 is added, in a little time as the liquid cools, long semi-opaque 

 needles shoot out from the sides of the vessel. The addition of 

 alcohol after the first crystallization, causes the separation of a 

 second portion. 



Upon dissolving in hot water equivalents of glycocoll and 

 urate of ammonia, and cooling, a flocculent mass was thrown 

 down, which the addition of alcohol increased, and which, when 

 examined with the microscope, proved to consist of exceedingly 

 minute prisms. 



The salt dried over sulphuric acid and burned with chromate 

 of !ead, gave from 0*2926 grm. substance, 0-3463 grm. carbonic 

 acid and 01144 grm. water, which equal carbon 32-46, hydrogen 

 4 '40. The formula 



. C< H 4 N0 3 , C 5 N 2 H 0,+NH 4 O, C 5 N 2 H 2 3 , 



squires carbon 32-30, hydrogen 4-61. 



Similar flocculent precipitates were obtained from solutions of 

 glycocoll in both urates of potash and soda. 



Glycocoll and Uric Acid. 



The importance of finding a compound of uric acid that would 

 readily dissolve in water, suggested the effort to combine it with 



glycocoll. ; * 5 



