GLUCINA. 319 



sulphuric acid. The sulphate of glucina thus 

 obtained was dissolved in water. The solution 

 was mixed with carbonate of ammonia to preci- 

 pitate the glucina, and heat was applied till the 

 ammonia ceased to be disengaged. The glucina 

 thus obtained, being well washed and heated to 

 redness, weighed 0*553 parts : the liquid thus 

 freed from glucina was precipitated by muriate 

 of barytes. The sulphate of barytes, after being 

 washed and heated to redness, weighed 5, which 

 is equivalent to 1*6949 of sulphuric acid.* 



Thus it appears, that the sulphate of glucina, 

 formed by the above process, is composed of 



Glucina 0-553 or 3-262? 



Sulphuric acid 1-6949 - 10 



Considering this salt as a bisulphate, Berzelius 

 dissolved a portion of it in water and digested it 

 over a quantity of carbonate of glucina free from 

 ammonia. By this digestion he obtained a gum- 

 my looking liquid. Part of this being mixed 

 with water, a white matter precipitated, (doubt- 

 less glucina) and the liquid being filtered, was 

 decomposed by carbonate of ammonia and mu- 

 riate of barytes precisely as the former salt. 

 The glucina obtained weighed 1*001, and the 

 sulphate of barytes 4*549, equivalent to 1-5573 

 sulphuric acid. Thus it appears, that the new 



* Berzelius' Attempt, e, p. 134. 

 16 



