OF THE SULPHATES IN THE URINE. 
257 
From these experiments it does not appear at all certain that dilute sulphuric acid 
does pass off in the urine. The question being still undecided, the amount of sul- 
phates in the whole quantity of water passed in twenty-four hours, for three success- 
ive days, when no sulphuric acid had been taken, was compared with the amount 
of sulphates in the whole quantity of water passed in twenty-four hours, for the 
three succeeding days, when sulphuric acid had been taken. The breakfast and 
dinner were the same for the six days. 
(24.) Total quantity of water passed in^ 
twenty-four hours, from 7 a.m. >1024 2 
to 7 a.m. =37i ounces, filtered-^ 
Spec. gr. Sulphate of baryta. 
7*75 grs. per 1000 grs. of urine. 
66 
9-18 
20 
r 9’] 
(25.) The following day =42 ounces, clear 1023*4 -j 
L 9 
(26.) The following day =34 ounces, 7.33 
filtered j 
During each of the three following days half an ounce of dilute sulphuric acid, 
specific gravity =1108*4, was taken in distilled water, the greater part from 9 to 
12 A.M. 
Spec. gr. 
(27.) Total quantity 46 ounces, filtered 1024*2 
(28.) The following day 42^ ounces, clear 1024*0 
(29.) The following day 43 ounces, clear 1025*4 
Sulphate of baryta. 
r 9*56 grs. per 1000 grs. of urine. 
1 9*64 
r 11*66 
I 11*64 
r 13*10 
1 12*81 
By comparing these experiments, it is certain that dilute sulphuric acid, taken in 
very large quantity, does cause an increase in the amount of sulphates passing olF in 
the urine. 
III. (b.) (30.) Breakfast at 9 a.m. Dinner at 6 p.m. : the water made at 1 1 a.m. was 
thrown away, and 61^ grains of dry sulphur in fine powder were taken. 
Spec. gr. Sulphate of baryta. 
Water passed at 
1 P.M. filtered . 
1020*2 
5*44 
Water passed at 
6 .... 
1023*1 
7*99 
Water passed at 
11 .... 
1027‘6 
13*37 
(31.) Experiment r 
epeated. 
Water passed at 
1 P.M. clear . . 
1012*2 
2*89 
Water passed at 
6 .... 
1020*7 
6*20 
Water passed at 
1 1 filtered . 
1026*2 
11*76 
(32.) Experiment r 
epeated. 
Water passed at 
1 P.M. clear . . 
1014*6 
4*19 
Water passed at 
6 .... 
1022*5 
10*26 
Water passed at 
11 filtered . . 
1025*4 
15*05 
