THE EARTHY AND ALKALINE PHOSPHATES. 341 



11:^ o'clock, water acid 

 1^ to 1 o'clock, water alkaline 

 3 o'clock, water alkaline 

 5J o'clock, water very acid 



1 o'clock, water very acid 



(26.) Breakfast as before. 30-8 grair 

 on the bowels. 



:j to 1 o'clock, water acid 

 3 o'clock, water acid 



^jo'clock, both acid 1-69 1032*3 



9 J o'clock, water very acid 2-44 1034*5 



(27.) Breakfast as before. No magnesia taken. 



Earthy phosphates. Spec. gr. 



3 o'clock 1*00 per 1000 urine 1030-3 



6 o'clock -59 1031-4 



9i o'clock 1*39 1031-6 



Hence 45 grains of magnesia produced no increase in the phosphates in two hours 

 and three quarters ; in five hours there was a marked increase ; in seven and a half 

 hours there was a still further increase, which was very marked at the end of twelve 

 hours, and from the large quantity of earthy phosphates present the following morning, 

 perhaps the magnesia had not ceased to act in twenty-four hours. 



30-8 grains of magnesia produced no evident increase in two hours and a quarter ; 

 in four hours and three quarters the increase was marked, and after eight hours and 

 three quarters it was quite perceptible. From the analysis of the urine after twenty- 

 six hours, it seems probable that the magnesia had not then ceased to influence the 

 amount of earthy phosphates. 



(28.) Water of the same child as (6.) and (7.) 15-4 grains of magnesia taken 

 about 7 2 o'clock. Did not operate until after last water was passed. Food as before. 



Earthy phosphates. Spec. gr. 



11 to 1 o'clock, water alkaline '62 per 1000 urine 10253 

 3 to 5 o'clock, water acid 1*57 per 1000 urine 1027*7 



(29.) Same child. Food as before. No magnesia. 



Earthy phosphates. Spec. gr. 



2 to 5 o'clock, water acid -36 per 1000 urine 1018-5 



(30.) Same child. 19*3 grains of magnesia at 8 o'clock. Medicine acted about 

 three o'clock. 



Earthy phosphates. Spec. gr. 



11 to 1 o'clock, water neutral '45 per 1000 urine 1014-4 



3 to 5 o'clock, water acid •SO 1017*1 



