CHAPTER XVIII. 



URINE: PHYSIOLOGICAL CONSTITUENTS. 1 



i. Organic Physiological Constituents. 



Urea. 

 Uric acid. 

 Creatinine. 

 Creatine. 



Ethereal sulphuric acids 



Hippuric acid. 

 Oxalic acid. 



f Indoxyl-sulphuric acid. 



I Phenol- and />-cresol-sulphuric acids. 



J Pyrocatechin-sulphuric acid. 



I Skatoxyl-sulphuric acid. 



Neutral sulphur compounds. 



Allantoin. 



Aromatic oxyacids 



Cystine. 



Chondroitin-sulphuric acid. 

 Thiocyanates. 

 Taurine derivatives. 

 Oxyproteic acid. 

 Alloxyproteic acid. 

 Uroferric acid. 



r Paraoxyphenyl-acetic acid. 



Paraoxyphenyl-propionic acid. 



Homogentisic acid. 



Uroleucic acid. 



Oxymandelic acid. 

 .Kynurenic acid. 



Benzoic acid. 

 Nucleoprotein. 

 Oxaluric acid. 



1 It is impossible to make any absolute classification of the physiological and 

 pathological constituents of the urine. A substance may be present in the 

 urine in small amount physiologically and be sufficiently increased under cer- 

 tain conditions as to be termed a pathological constituent. Therefore it de- 

 pends, in some instances, upon the quantity of a constituent present whether it 

 may be correctly termed a physiological or a pathological constituent. 



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