URINALYSIS. 141 



Solids 60.000 



Urea 35-o 



Uric acid -75 



Sodium chloride 16.500 



Phosphoric acid 3-5 



Sulphuric acid 2.000 



Ammonia .625 



Creatinin .900 



Chlorine I i.ooo 



Potassium ' 2.500 



Sodium 5-5o 



Calcium .260 



Magnesium .210 



TEST FOR CHLORIDES IN URINE. 



Take 10 c.c. of urine, add to it I drop of potassium 

 chr ornate,; add to this silver nitrate until the color 

 changes to red, noting the amount of silver added. Now 

 calculate the amount of chlorine present. I c.c. of sil- 

 ver nitrate corresponds to .00586 grams of sodium chlo- 

 ride. A more practical method is to take a small 

 amount of urine and add to it I drop of I in 8 silver 

 nitrate solution. Note results. If a curdy precipitate 

 occurs, which is not divided on shaking the urine, the 



