Physiological Action of XJranium Salts. 



400 c. c. of water were fed to the animal twice daily, making a total 

 daily income of 10-054 grams of nitrogen. As soon as nitrogenous 

 equilibrium was established, the 24 hours' urine was analyzed for 

 nine consecutive days, thus giving the average composition of the 

 normal excretion. Uranyl nitrate was then administered for ten 

 consecutive days in gradually increasing quantities. 



The accompanying tables give the analytical results. Nitrogen 

 was determined by the Kjeldalil method, sulphur and phosphorus 

 by fusion of a given volume of the urine with potassium hydroxide 

 and potassium nitrate in a silver crucible, and precipitation of the 

 sulphur as barium sulphate and of the phosphorus first as phospho- 

 ammonium molybdate and then as ammonio-raagnesium phosphate.* 



Normal Urine— Without uranium. 



Examination of the first table shows that the animal was in nitro- 

 genous equilibrium, the average daily excretion of nitrogen for the 

 normal period being 9-904 grams while the daily amount of nitrogen 

 taken was 10-054 grams, thus showing a fairly close agi-eement, espe 



* See studies from Laboratory of Physiological Chemistry, Tale University, vol. ii, 



p. 88. 



