172 



THE MICROSCOPIST. 



a few drops of hydrochloric acid ; and allowing it to stand 

 few hours in a cool place. 



Fig. 51. 



Hippuric Acid is generally present in a small quantity in 

 healthy urine, and in certain forms of disease, especially where 

 a vegetable diet has been adopted. Fig. 52 represents some 



Fig. 52. 



of its forms ; a are deposited from an alcoholic solution, and 

 b from a hot aqueous solution. 



When an excess is suspected in urine, it should be evapo- 

 rated to the consistence of syrup and mixed with half its bulk 

 of strong hydrochloric acid. After a few hours the crystals 



