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PHYSIOLOGICAL CHEMISTRY 



Pepsin. 



Enzymes ] Gastric rennin. 



Amylase. 

 Acetic acid. 

 Butyric acid. 

 Formic acid. 



Volatile fatty acids 



Paralactic acid. 

 Phenaceturic acid. 

 Urocanic acid. 



Phosphorized compounds , 



Pigments 



Ptomaines and leucomaines. 



Glycerophosphoric acid. 

 Phosphocarnic acid. 

 Urochrome. 

 Urobilin. 

 Uroerythrin. 



Adenine. 

 Guanine. 

 Xan thine. 

 Epiguanine. 



Purine Bases Episarkine. 



Hypoxanthine. 

 Paraxanthine. 

 Heteroxanthine. 

 i-Methylxanthine. 



2. Inorganic Physiological Constituents 



Ammonia. 



Sulphates. 



Chlorides. 



Phosphates. 



Sodium and potassium. 



Calcium and magnesium. 



Carbonates. 



Iron. 



Fluorides. 



Nitrates. 



Silicates. 



Hydrogen peroxide. 



Normal urine varies widely in composition, being influenced by diet 

 and other factors. The following table represents the composition of a 

 normal urine. 1 



1 Vierordt: Daten und Tabellen. Jena, 1906, p. 330. 



