URINE. 



143 



ON THE COMPOSTTION OF NORMAL URINE. 



Berzelius 1 published an analysis of healthy urine in the year 

 1809, which was, till a very few years ago, the only one that 

 gave a correct view of the constitution of so important a secre- 

 tion. He does not state anything about the circumstances 

 under which the urine was voided, or in regard to the person 

 from whom it was taken. 1000 parts contained : 



Water . . . . 933-00 



Solid residue .... 67'00 



Urea . . 30-10 



Uric acid . 1-00 



Free lactic acid, lactate of ammonia, alcohol- and! 17.11 



water-extract . .J 



Mucus . . . 0-32 



Sulphate of potash . . 3'71 

 Sulphate of soda 

 Phosphate of soda 



Biphosphate of ammonia . . 1-65 ! Fixed salts. 



Chloride of sodium . . 4-45 f 15-29 



Chloride of ammonium . . 1-50 



Phosphate of lime and magnesia . . 1-00 



Silicic acid .... 0-03^ 



I have made two analyses of the urine of a healthy man, 

 aged 33 years, of a decidedly sanguineous temperament, whose 

 digestion and nutrition were not very good. 1000 parts 

 contained : 



Analysis 94. 

 1012 

 956-00 

 44-00 

 14-578 

 0-710 



Ext. mat & 

 , " amm.-salts. 

 H = 12-94 



2-55oJ 



2 7-280"! 



3-508 



2-330 I 



0-654 f 



I 



a trace j 



13-77 



1 Thierchemie, p. 458. 



2 This includes the lactate (carbonate) of soda and a little sulphate of potash. 



