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it, hydrochloric acid gives a crystalline precipitate, the deposit 

 will give the murexide test. (Page 26). 



Uric Acid. If a crystalline deposit, almost insoluble in 

 boiling water, but soluble in caustic potash and giving the 

 murexide test, it is uric acid. 



Cystine, (very rare). The deposit is crystalline, insoluble 

 in caustic potash but soluble in ammonia and hydrochloric acid. 



Pus. A white, dense, mucus deposit, viscid and not often 

 mixing with the urine; caustic potash renders it more viscid; 



Plate II. 

 Various forms of Calcium Carbonate Crystals. (Horse Urine). 



