and some of its Products of Decomposition. 



329 



When washed and dried the baryta compound was no longer 

 soluble in water, not even with long continued boiling. It was 

 however promptly dissolved in dilute hydrochloric acid. It con- 

 tains neither chlorine nor nitrogen. 



The baryta salt alone was analyzed. 



Combustion with chromate of lead gave from 

 I. 0-3218 



II. 0-6627 



grm 



it 



of sub. 0*1544 carb. acid and 0-0547 water. 



» 



u 



0*5210 sulphate of baryta. 



The only formula which can be derived from these determina- 



tions is 



Which requires : 



O. H„ CL+BaO. 



6 





Carbon, 

 Hydrogen, - 

 Oxygen, - 

 Baryta, 



3 equiv. 

 3 " 



6 « 

 1 " 



18 

 3 



48 



76-6 



145-6 



Estimated 



205 

 32-99 

 52-60 



Found 



10000 



13* 08 



1-89 



33 38 



51*65 



100-00 



C 3 H 3 O s +NH 4 a+Co a +2HCl. 



The same remarks are applicable to this formula that have 

 been made concerning the precedin^ 



It is recorded chiefly to show that chlorine does not act upon 

 glycocoll as upon many other bodies, by which a certain number 

 of atoms of hydrogen are replaced by an equal number of atoms 

 of chlorine. 



The action may be conceived to be the following : 



C 4H 4 No 3 -f5HO-f-3Cl 



The same body was obtained by direct addition of a solution 

 of permanganate ofpotassa to an aqueous solution of glycocoll. 



After boiling a length of time with nitric acid y the same pro- 

 duct of decomposition was formed. 



When pulverized chlorate of potash in small quantity and at 

 intervals is added to a solution of glycocoll in hydrochloric acid, 

 a slow oxydation goes forward, and a product is obtained, in 

 *hich, as in the cases above noticed, baryta gives apparently the 

 ^nie white crystalline precipitate. 



Action of Caustic Potash. 



The brilliant fire red color assumed by glycocoll when heated 

 w «h caustic potash, has already been noticed. If the solution be 

 ev aporated to extreme concentration, the evolution of ammonia 

 "~ J ' " "at length the mass becomes solid. 



c acid, hydrocyanic acid is evolv- 



Berlin blue is formed. When dis- 



chlorid of calcium is followed by 



until 



ar * instantaneous white precipitate, which does 

 a cetic acid — a precipitate of oxalate of lime. 



8. 



No 



Nov., 1847. 



42 





