OF THE URIC ACID IN THE URINE. 
249 
specific gravity 1027’8, and in the other roi gr. per 1000 grs. of urine, specific gravity 
1025'6, after dinner in the one case and after breakfast in the other. The lowest 
amount in both was 0'049 gr. per 1000 urine, specific gravity 1024’8 ; and 0‘049 gr., 
specific gravity ]024'0, in both instances before dinner. So that neither as regards 
the diminution nor the increase of the amount of uric acid can any positive result 
be obtained from these experiments on the influence of animal and vegetable food. 
The variations in the acidity are not very different on animal or on vegetable food; 
the acidity rises higher when vegetable food is taken than when animal food only 
was taken. 
I next endeavoured, if possible, to determine the effect of exercise. No food was 
taken from dinner on the previous day to dinner this day at a quarter to six ; both 
meals consisted of mixed diet of bread, meat and potatoes. The exercise was mo- 
derate between three and six. 
No water was passed from 11 the previous night to 6 a.m. 
Acidity per 1000 grs. 
of urine. 
Uric acid per 1000 grs. 
of urine. 
(13.) Water passed at 6 A.M. clear . 
Spec. gr. 
1026*7 
measures. 
13*63 
grain. 
0*63 
Water passed at 1 1 a.m. clear . 
1024*3 
19*52 
0*63 
Water passed at ^ to 6 p.m. . . 
1027*9 
12*65 
0*73 
Water passed at 1 1 p.m. clear . 
1021*0 
alkaline 
0*49 
Water passed at 6 a.m. clear 
1022*3 
22*49 
0*58 
(14.) Nothing was taken from dinner 
on the previous day until 5^ 
P.M. this day. 
Strong exercise was taken from 2^ to 5^ p.m. Pulse always above 100. 
At nine urine 
clear and thrown away. 
Acidity per 1000 grs. 
of urine. 
Uric acid per 1000 grs. 
of urine. 
Spec. gr. 
Water passed at 1 p.m, few uric acid crystals 1 022*5 
measures. 
19*56 
grain. 
0-344 
Water passed at 5| p.m. clear . . . . 
1025*2 
25*36 
0*268 
Water passed at 10^ p.m. very thick, some 
uric acid crystals 
1 1030*0 
19*41 
1*286 
Water passed at 1^ a.m. very thick, some 
uric acid crystals 
1 1027*1 
17*52 
0*924 
Water passed at 7 a.m. very thick, some 
crystals of uric acid 
j 1025*5 
33*14 
0*878 
(15.) Nothing was taken from dinner 
on the previous day until 
ten minutes after 
five this day. Moderate exercise was taken from 2 
to 5 P.M. 
Acidity per 1000 grs. 
of urine. 
Uric acid per 1000 grs. 
of urine. 
h m 
Water passed at 6 10 a.m. clear . 
Spec. gr. 
. 1025*7 
measures. 
15*59 
grain . 
0-098 
Water passed at 1 1 20 a.m. thick 
. 1024*8 
13*96 
0*61 
Water passed at 5 10 p.m. thick. 
. 1028*3 
14*90 
0*52 
Water passed at 1 1 p.m. clear . 
. 1031*1 
2*85 
0*87 
Water passed at 5 40 a.m. clear . 
. 1026*9 
10*71 
0*12 
