THE URINE. 



Urea j ; > t . . 3010 



Sulphate of potass - 3-71 



Sulphate of soda - 3.15 



Phosphate of soda - 



Chloride of sodium - 



Phosphate of ammonia . 1.55 



Chloride of ammonia - - 1*50 



Free lactic acid 



Lactate of ammonia ... 



Animal (extractive) matter soluble in (anhy- 

 drous) alcohol, and usnally accompanying ^ 17*14? 

 the lactates 



Animal matter insoluble in alcohol 

 Urea, not separable from the preceding 

 Earthy phosphates with a trace of fluate of lime 1-00 

 Mucus of the bladder - 0-34? 



Silex - 0-03 



1000-00 



In the urine of young children and herbivorous animals benzole 

 acid is found, united with animal matter, and perhaps thus exists 

 as a peculiar acid, for which Berzelius proposes the name of 

 uro-benzoic acid. r 



According to some, urine, like the blood, affords carbonic acid 

 gas under the receiver of an air-pump 8 , and more after a meal t ; 

 but others regard its presence as accidental, from not having been 

 able to find it. u 



Uric acid is in the form of soft white scales, without taste or 

 smell, requiring a thousand times its weight of cold water for its 

 solution, and nearly as much of boiling water. According to 

 Dr. Prout it consists of 



Nitrogen - - 31-125 



Carbon - - 39-875 



Hydrogen - 2-225 



Oxygen - 26'775 



The urine contains much more uric acid in solution than an equal 

 quantity of boiling water would dissolve. Hence Dr. Prout con- 



r TraitS de Chimie, t. vii. p. 363. 1833. 

 Vogel, Anndes de Chimie, t. xciii. 

 1 Mr. Brande, Phil. Trans. 1810. 

 u Berzelius, 1. c. and Whoeler. 



