OF THE URINE IN THE STATE OF HEALTH. 
673 
It follows therefrom, that carbonate of ammonia, taken in large doses, does not 
diminish the acidity of the urine. On the contrary, the third day (experiment 44.), 
when most carbonate of ammonia was taken, the acidity was higher than it had been 
any previous day. By experiment (45.) it appears that the aeidity of tlie urine was 
still high on the following day. The effect of the eighty grains of carbonate of ammo- 
nia was very evident twenty-four hours after it was taken. 
The comparison between Plate XXII. Philosophical Transactions, 1849, represent- 
ing the acidity when tartaric acid was taken, and this Plate, which shows the effect 
of carbonate of ammonia, is worthy of observation. The urine was more acid when 
carbonate of ammonia was taken than when tartaric acid was taken. It is possible 
that there was some differenee in the irritability of the stomach when the two series 
of observations were made. But the gradual increase of the acidity, as the quantity 
of carbonate of ammonia taken was increased, shows that the difference of the state 
of the stomach was not the cause of the state of the acidity of the urine. When no 
carbonate of ammonia was taken, the acidity of the urine, after food was taken, was 
diminished to a greater degree than it was when the volatile alkali was taken. 
The comparison between Plate XXL Philosophical Transaetions, 1849, which re- 
presents the acidity of the urine when liquor potassee was taken, and this Plate, which 
shows the aeidity when carbonate of ammonia was taken, is also very interesting, as 
it establishes the important difference of the effect of volatile and fixed alkali on the 
acidity of the urine. 
That 138 grains of carbonate of ammonia, taken in three conseeutive days, should 
not diminish the acidity of the urine is very remarkable. It is still more worthy of 
attention that it actually increases the aeidity. It appeared very desirable to test these 
faets by further experiments. 
( 47 .) The experiment with large doses of carbonate of ammonia was therefore re- 
peated. For comparison, the day previous to that on which the carbonate of ammo- 
nia was taken, the variations in the acidity of the urine were determined. Breakfast 
s’* 30*" A. M. Dinner at 7 
P.M. 
h m 
Spec. gr. 
Acidity per 1000 grs. of urine. 
Appearance. 
Water passed at 7 20 a.m. thrown away. 
Water passed at 8 30 
1028-8 
+ 19'44 measures. 
Thick from urates. 
W’'ater passed at 9 40 
1026-0 
-f 14-62 
Thick from urates. 
Water passed at 10 35 
1025-2 
-f 5-85 
Clear. 
Water passed at 11 55 
1027-6 
- 1 4-59 
Cloudy from phosphates. 
Water passed at 1 0 p.m. 
1027-9 
+ 12-64 
Cloudy from urates. 
W^ater passed at 2 55 
1026-8 
+ 18-50 
Thick from urates. 
Water passed at 5 10 
1025-4 
+ 24-38 
Thick from urates. 
Water passed at 7 0 
1027-9 
+ 31-13 
Thick from urates. 
Water passed at 11 0 
1031-8 
+ 7-75 
Thick from urates. 
W'ater passed at 6 45 A.^r. 
1024-7 
+ 9-76 
Clear. 
(48.) The following day, 
, Breakfast 
at 8‘’ 15™ A. M. Dinner at 7 p-m. Twen 
MDCCCL. 4 R 
