144 



THE SECRETIONS: 



I have analysed the urine of the same man upon three other 

 occasions under the following circumstances. A represents 

 urine passed upon rising in the morning, after having drunk 

 several glasses of water the previous evening. After drinking 

 coffee and a glass of water, such violent exercise was taken for 

 two hours, that the pulse rose to above 100, wdth occasional 

 intermissions ; the urine B was then voided. Half an hour af- 

 terwards the urine C was discharged. In all three cases the 

 urine was clear, B being the most slightly tinged. They all 

 had an acid reaction, that of C being the strongest, and of B 

 the weakest. The analyses, in which, however, all the prox- 

 imate constituents were not determined, gave the following 

 results : 



Specific gravity . < 



Water 



Solid residue 



Urea 



Uric acid, extractive matter, ammonia- 

 salts, and chlorine compounds 



Phosphate of soda 



Sulphate of potash 



Phosphates of lime and magnesia . 



C. G. Lehmann has likewise made some very minute analyses 

 of the healthy urine of a young well-fed man, [himself in fact.] 

 These analyses approximate closely in their results to those of 

 Berzelius. They were made with the collected urine of the 

 past twenty-four hours. The concentration of the fluid may 

 be explained by the circumstance of the young man by whom 

 the urine was passed, taking only a very little drink, as is the 

 usual habit with persons of the sanguineo-bilious temperament. 



Water 

 Solid residue 



Urea 



Uric acid . 



Lactic acid 



Water-extract 



Spirit- and alcohol-extract 



Lactates 



Chlorides of sodium and ammonium 



Alkaline sulphates 



Phosphate of soda 



Phosphates of lime and magnesia 



Mucus 



