1835.] on Urine. it 



3^ = 



3 



By equating these two values of y we get x = 0-3418. 

 Hence y = 11524. 



Therefore 4 3/ or the soda = 4.61 

 " 6 :r or the potash = 2.051 

 Thus it appears that the soda in the urine is more than 

 twice the weight of the potash. 



6. To determine the quantity of uric acid, another equal 

 portion of the fresh urine was mixed with a little nitric 

 acid, and set aside for 24 hours. The uric acid deposited 

 was white, or rather grey, and weighed 0*242 grs. 



7. Another portion of the same urine, was mixed with 

 half its bulk of moderately strong potash ley, in a retort, 

 the beak of which was plunged into a weak solution of 

 nitrate of lead, and a fourth part of the liquid was distilled 

 off by a gentle heat. The ammonia which passed over 

 threw down the oxide of lead. The quantity of oxide thus 

 precipitated, supposing the urine employed to have been 

 1000 grs., would have weighed 0-856 grs., equivalent to 

 0'13 grs. of ammonia. 



8. To determine the quantity of urea, the following 

 method was adopted : The portion of urine from which 

 the uric acid had been precipitated by means of nitric acid 



