OF THE ACIDITY OF THE URINE. 
205 
h m 
Spec. gr. Acidity per 1000 grs. of urine. 
Appearance. 
Water passed at 
8 15 A.M. 
= 1026-0 
= -1-21-44 measures. 
Thick from urates. 
Water passed at 
9 50 
= 1024-2 
= -f 0-97 
Clear. 
Water passed at 
10 40 
= 1024-9 
= —28-29 
Thick from phosphates. 
Water passed at 
11 40 
= 1024-4 
= -23-42 
Thick from phosphates. 
Water passed at 
12 40 P.M. 
= 1023-7 
= + 3-90 
Clear. 
Water passed at 
1 15 
= 1023-5 
= + 9-77 
Clear. 
Water passed at 
2 25 
= 1024-7 
= -8 22-44 
Clear. 
Water passed at 
3 15 
= 1023-4 
= -8 24-42 
Clear. 
Water passed at 
5 5 
= 1019-4 
= + 26-48 
Clear. 
Water passed at 
6 50 
= 1025-3 
= + 29-26 
Clear. 
Water passed at 
11 35 
= 1030-6 
= +17-46 
Thick from urates. 
Water passed at 
6 20 a.m. 
= 1025-0 
= + 5-85 
Clear. 
Water passed at 
8 15 
(29.) The following day. 
Breakfast at 8^ 
IS'” A.M. Dinner at 6^p.m. Food as befor 
No tartaric acid 
was taken. 
Water passed at 
8 15 
= 1026-4 
= +21-43 measures. 
Thick from urates. 
Water passed at 
10 15 
= 1025-4 
= + 6-82 
Clear. 
Water passed at 
11 20 
= 1024-7 
= -13-66 
Clear. 
Water passed at 
12 35 P.M. 
= 1025-5 
= - 7-80 
Clear. 
Water passed at 
2 40 
= 1026-0 
= +14-61 
Clear. 
Water passed at 
6 20 
= 1028-6 
= +26-23 
Clear. 
Water passed at 
11 25 
= 1031-0 
= + 5-81 
Thick from urates. 
Water passed at 
6 45 A.M. 
= 1024-6 
= + 10-72 
Clear. 
Water passed at 
8 10 
= 1025-9 
= + 14-62 
Clear. 
The result of these experiments is easily seen in Plate XXII. It follows that tartaric 
acid in large doses does produce a decided effect on the acidity of the urine ; but it 
did not render the urine constantly acid during the three days that the experiment 
lasted. 
The first day on which the acid was taken, the urine was much more concentrated 
than on the two other days, and hence the effect of the smaller dose of acid appears 
more evident than the larger. 
The influence of the state of the stomach is very apparent. Before each meal the 
acidity is greatest. After food, notwithstanding the tartaric acid, the acidity is 
diminished. 
The alkalescence of the urine was rarely so much as to equal one grain of carbo- 
nate of soda in 1000 grains of urine ; whilst the acidity of 1000 grains of urine for the 
most part required about two grains of carbonate of soda to make its reaction neutral. 
The conclusion from these experiments is, that 354 grains of dry and pure tartaric 
acid, taken in three days, increases the acidity of the urine ; but in that time it does 
not render the effect of the stomach on the reaction of the urine less apparent than 
when no acid was taken. 
III. {d.) The effect of tartrate of potash on the acidity of the urine was then ex- 
amined. Some well-crystallized tartrate of potash was dried, reduced to a fine pow- 
der and dissolved in distilled water. The solution was neutral to test-paper. 
