OF THE ACIDITY OF THE URINE. 
241 
h 
m 
Spec. gr. 
Acidity per 1000 grs. of 
urine. 
Water passed at 
3 
30 P.M. 
1019-8 
-|- 8 82 measures. 
Clear. 
Water passed at 
5 
55 
1021-2 
-1-16-64 
Clear. 
Water passed at 
8 
30 
1030-9 
-fl7*46 
Thick from urates. 
Water passed at 
10 
50 
1023-4 
0 
Clear. 
Water passed at 
6 
30 A.M. 
1010-6 
H- 5-93 
Clear. 
Water passed at 
8 
45 
1020-9 
-f 8-81 
Clear. 
Breakfast at 8^ 45 
“ A.M. on 
animal food only. 
Water passed at 
10 
20 
1023-1 
— 10-75 measures. 
Clear, 
Water passed at 
11 
0 
1022-9 
— 29-23 
Thick from phosphates. 
Water passed at 
12 
0 
1022-3 
-30-75 
Thick from phosphates. 
Water passed at 
12 
50 P.M. 
1023-5 
—25-40 
Thick from phosphates. 
Water passed at 
4 
30 
1027*6 
-1-13-62 
Thiek from urates. 
If these changes, represented in Plate XIX., are compared with those in Plate 
XVIII., it will be evident that the diminution of the acidity of the urine is very different, 
though the experiments were made on six consecutive days. For the three days that 
vegetable food was taken, the urine never was markedly alkaline ; twice it was neutral 
to test-paper, between three and four hours after breakfast ; but it never became so 
alkaline as when the diet was mixed, or consisted of animal food only. The breakfast, 
after the three days of vegetable food, consisted almost entirely of animal food, and 
then, for at least two hours and a half, the urine was highly alkaline. The increase 
in the acidity before food on the second day is very marked. It was higher than on 
any previous occasion. The third day, before dinner, at S*’ 55“ p.m., the acidity per 
1000 grs. urine equaled 16'64 measures. At half-past eight it had increased to 17‘46 
measures, though in all the previous experiments the acidity diminished after dinner ; 
but at lO'* 50“ P.M. the urine had become neutral to test-paper. Possibly this increase 
of acidity was owing to the honey taken at breakfast. 
III. On the Influence of Medicines, (a.) Sulphuric acid. 
For three following days dilute sulphuric acid, specific gravity 1-1077? was taken, 
in doses of three drachms daily. In all, nine drachms of acid were taken. 
Breakfast as in experiments (1.), (2.), (3.), at 8^ 45“a.m. Dinner, as before, at 
5h 45m p jyj Qne drachm of dilute acid, in two ounces of distilled water, was taken at 
7h 45"* Another at 12^ 45“ p.m. The last at 4*^ 50“ p.m. 
h m Spec. gr. Acidity per 1000 grs. of urine. 
(11.) Water passed at 7 45 a.m. 1024-8 -j- 20- 49 measures. Thickish from urates. 
Water passed at 8 45 1022-5 -|-13-69 Clear. 
Water passed at 10 15 1012 6 + 8-88 Clear. 
Water passed at 11 25 1022-5 — 8-80 Clear. 
Water passed at 12 45 p.m. 1026-1 — 3-89 Clear. 
Water passed at 3 10 1023-4 -1-13-68 Clear. 
Water passed at 4 50 1024-1 -1-21-48 , Clear. 
