336 



DR. BENCE JONES ON THE VARIATIONS IN 



ment, was a matter of considerable importance ; a few hours being usually all that 

 were required to tell in what excess or deficiency the phosphates might be present. 



I. (1.) Breakfast on bread and meat with coffee at 9J o'clock. Dinner at 6 : meat, 

 potatoes, and little bread. 



Earthy phosphates. 



Water passed 6 o'clock, evening 32 per 1000 urine 

 10 o'clock, evening '97 



Spec. gr. 

 1022-8 



Alkaline phosphates. 



6-50 per 1000 urine. 

 5-45 



1027*3 



6 o'clock, morning -81 1017'4 4*01 

 (2.) Food as before. More exercise. Dinner at 7- 



7 o'clock, evening '37 1027-2 7*26 



1 1 o'clock, evening 1-22 1029-9 6*06 

 5 o'clock, morning 1*41 1025-5 3-64 



(3.) Food as before. Still more exercise. 



7 o'clock, evening '75 1028-0 8*10 



12 at night 1-29 1025-5 6-67 

 (4.) Food as before. Exercise very great excess. 



7 o'clock, evening -21 1028*2 8-22 



1 at night 1*85 1034*3 5-94 



(5.) Food as before. Exercise much less. 



7 o'clock, evening -35 1029*3 7*75 



1 at night 1*91 1033-2 4-72 



Average mean of five days. Long after food, and soon after exercise. 



Spec. gr. 

 Earthy phosphates "40 per 1000 urine 1027*9 



Alkaline phosphates 7*56 1027*9 



From this five days' experiment, it appears that the earthy phosphates are greatly 

 increased in the water secreted soon after food ; the quantity varying after dinner 

 from 1*91 per 1000 urine, specific gravity 1033-2, to '97 per 1000 urine, specific 

 gravity 1027*3; the mean of all the experiments being 1*45 per 1000 urine, specific 

 gravity 10300. 



The earthy phosphates are far less in the water secreted a long time after food ; 

 the quantity varying from -21 per 1000 urine, specific gravity 1028-2, to '75 per 1000 

 urine, specific gravity 1028*0; the mean of all the experiments being '40 per 1000 

 urine, specific gravity 1027*9. 



The alkaline phosphates are in excess in the water secreted a long time after food 

 and soon after exercise ; the quantity varying from 8-10 per 1000 urine, specific gravity 

 1028-0, to 6-50 per 1000 urine, specific gravity 1022-8; the mean of all the experi- 

 ments being 7*56 per 1000 urine, specific gravity 1027'9. 



The alkaline phosphates are far less in the water secreted soon after food ; the 

 quantity varying from 6'67 per 1000 urine, specific gravity 1025-5, to 4*72 per 1000 

 urine, specific gravity 1033*2 ; the mean of all the experiments being 5*77 per 1000 

 urine, specific gravity 1030*0. 



Soon after food with perfect rest. 



Spec. gr. 



1*45 per 1000 urine 1030*0 



5-77 1030-0 



