URIC ACID. 16 1 



Uric acid ... 4 

 Soda 1-568 



5-568 



For, if we subtract the weight of the common 

 salt (2*94 grains) from that of the residual mat- 

 ter, (6*94 grains) there remain 4, which must be 

 uric acid; and 2*94 grains of common salt are 

 equivalent to 1*568 grains of soda. 



(3.) The 8*56 grains of urate of soda obtained 

 by precipitation, obviously contained 2*432 grains 

 of soda. When heated, this salt lost 0*656 grain 

 of its weight, which was water, for it condensed 

 on the glass placed over the evaporating capsule. 

 Hence, it is obvious that the urate of soda was 

 composed of 



Uric acid . . . 5-472 

 Soda . . . 2-432 



Water . . . 0-656 



8-560 



Let us reduce this to what the weight of each 

 ingredient would be if the soda had amounted 

 to 4 grains, which is equivalent to an atom of 

 that alkali, and we have the constitution of 

 urate of soda as follows : 



Uric acid ... 9 

 Soda 4 



Water . . 1-079 



VOL. II. L 



