792 
DE. SMITH ON THE ELIMINATION 
day in which bread and water only were taken until 3 p.m., and then a suitable supply 
of food. The urine was not emitted at any prescribed hours, but at short intervals. 
The following Table contains the results of these inquhies. 
Table XXII. — Showing the Hourly Eate of Excretion of Urea and Urinary Water, ■with 
a diet of bread, water, tea or cotfee on three days, and additional food on the fourth 
(Plate XXXIV. fig. 5). 
I860. 
Bread 8 oz., water 12 oz. 
at 8i, 12^, -H, and 7^, 
and 2 oz. of bread 
at midniglit. 
Hour. 
February 6. 
Urea. 
Urine. 
February 7. 
Bread 8 oz., water 12 oz., 
tea (black) 75 grs., at 
8^, 12-^, 3^, 7-^ P.M., 
and 2 oz. of bread at 1 1 
Bread 8 oz., water 12 oz. 
coffee oz., at 8^, 
12|, 4i, 8*. 
Urea. 
Urine. 
Februai’y 8. 
Bread 8 oz., water 12 oz. 
at 8f, 12f ; dinner at 3 
tea at 6 ; coffee 8^ ; 
snpper 11. 
Urea. 
Urine. 
February 9, 
Urea. 
Urine. 
1 
8 to 9 
9 to 10 
1 0 to 11 . 
11 to 12 J 
3.30 
4.30 
6 to 7 
8 
lOi to 11 
12 
Night. 
grs. 
14-5 
27-9 
29-3 
17’3 
15‘6 
14-2 
oz. 
1-51 
4*35 
6-82 
i"97 
1-37 
1-03 
grs. 
10-3 
17 
20- 5 
21- 3 
24-6 
21-6 
19-3 
19-7 
•7 
1-33 
1- 3 
2 
3-0 
2- 25 
1*51 
1*46 
grs. 
13-5 
22*4 
19-8 
25-4 
22*3 
20-4 
25-2 
13*59 
1 
1*87 
1*65 
3*37 
3*3 
3 
2 
•98 
grs. 
13*6 
17-9 
25*2 
19-8 
23*7 
26*4 
29*6 
15*6 
oz. 
•92 
1-24 
2 
1-8 
3-47 
1-6 
4 
1 
I attended to my ordinary duties during this inquiry. There was a marked sense of 
want experienced, and particularly on the first day ; but the two following circumstances 
were the most intolerable, tiz. the sensation of cold following the drinking of the cold 
water, and the absence of sufiicient saliva to enable me to masticate the bread vrithout 
taking water with every mouthful. The first was partially relieved by taking a small 
quantity of bread at night, the second by drinking warm water ; but as the quantity of 
water was insutficient to enable me to well masticate the bread, I found no relief for the 
third. The experiment was relinquished on the fourth day, from the sense of depression 
and the want of courage in looking to the prospective periods of the inquiry ; and after 
its relinquishment I ate heartily and with enjoyment. 
On the three first days the hourly progression in the rate of elimination of urea and 
urine was precisely the same as that which occurs with ordinary food ; but the maximum 
was perhaps depressed a httle, on account of the small quantity of fiuid which was taken 
at the breakfast. The maximum hourly increase of urea was I4'8 grs., 14'3 grs., and 
11-9 grs. in their order; and when compared with the basis quantity, the increase per 
cent, was 100, 141, and 88 in their order. The first day succeeded to the Sunday, when 
there was commonly a small excess of food, and the progress through the day was so 
regular that the rate of excretion during the night was the same as it had been in the early 
morning. On the days "with tea and coffee added to the dietary, the maximum amount 
