258 
DR. BENCE JONES ON THE VARIATIONS 
(33.) Experiment repeated. 
Spec. gr. 
Water passed at 1 p.m. clear 1018‘9 
Water passed at 3 . lOlS’O 
Water passed at 6 . 1025’6 
Water passed at 11 filtered 1027'9 
(34.) Experiment repeated. 
Water passed at 1 p.m. filtered 1023'0 
Water passed at 3 clear . . lost 
Water passed at 6 clear . 1020’7 
Water passed at 1 1 filtered . 1028'8 
61^ grains of dry sulphur taken each day. 
Average of five days after") 
dinner and rest . . . . J 
Immediately before dinner "I 
1027-1 
after exercise 
1022'5 
Sulphate of baryta. 
6‘81 grs. per 1000 grs. of urine. 
6- 52 
11-89 
14'74 
7'99 
7- 11 
15-15 
14-01 grs. per 1000 grs. of urine. 
8-69 
Comparing this average of experiments 30, 31, 32, 33, 34, with the average of ex- 
periments 1, 2, 3, 4, 5, it is seen that the sulphates are positively increased in the 
urine when sulphur is taken into the stomach. 
III. (c.) (35.) Breakfast 9 a.m. Dinner at 6|^p.m. : at 1 p.m. 123^ grains of dry 
sulphate of potash were taken in 1^ ounce of distilled water. It did not act on the 
bowels. 
Spec. gr. Sulphate of baryta. 
Water passed at 1 p.m. clear 1017-7 3-03 grs. per 1000 grs. of urine. 
Water passed at 3 ... 
IOI6-7 
3-00 
Water passed at 6^ ... 
1020-8 
6-65 
Water passed at 10^ . . . 
1026-0 
12-18 
(36.) The same quantity of sulphate of potash taken at 
Water passed at 1 p.m. clear 
1020-2 
3-17 
Water passed at 3^ . . 
1024-0 
8-74 
Water passed at 6|^ . . 
1024-2 
12-51 
Water passed at 1 0|^ . . 
1032-4 
20-49 
(37.) Experiment repeated. 
Water passed at 1 p.m. clear 
1021-6 
3-17 
Water passed at 3 . . 
1021-4 
4-98 
Water passed at 6 . . 
1024-0 
9-04 
Water passed at 10^ filtered 
1030-8 
15-72 
Hence 123 grains of sulphate of potash began to increase the amount of sulphates 
in the urine from four to six hours after they were taken ; and the effect was strongly 
marked from seven to twelve hours afterwards. 
In my next paper, on the sulphates in the urine in disease, many instances will be 
