OF UREA AXD URINARY WATER. 
795 
Hence during a week of regular labour and food, the daily rate of excretion of urea 
diminishes as the week advances. 
I have also found that, on the average, the weight of the body increases greatly on the 
Sunday, and progressively lessens throughout the week, with greater or less uniformity, 
when a tolerably uniform amount of exertion is made ; but with the ordinary variations 
of exertion the weight is the least on the Saturday, and the greatest on the Sunday 
and Monday mornings. The body was weighed naked on retiring to rest, and also on 
rising, directly after having passed urine, and before defascation. The hour of weigh- 
ing was not fixed, but varied at night from 11 on Sundays to 12 or 1 o’clock on other 
days, and from 8 to 9^ in the morning ; and therefore there would be cause for a slight 
variation in the results. The scales were good ones, of ordinary construction ; and I did 
not attempt to w'eigh nearer than to half an ounce. The average of the weights at night 
and on the following morning were entered as the weight for that day. 
The following Table XXIV., and Plate XXXIV. fig, 4, represent the weight on each 
day from Februaiy 4 to March 3, 1861. 
Table XXIV. — Showing the Weight of the Body naked, and after emission of 
Urine, on each day of the week, diminished by 13 stones (182 lbs.). 
18G1. 
February 4 to 10. 
February 10 to 17. 
February 17 to 24. 
February 24 to Mar. 3. 
Sunday 
Monday 
Tuesday 
Wednesday 
Thursday 
Friday 
Saturday 
lbs. oz. 
9 6| 
9 71 
9 2 
8 2l 
8 8 
8 8 
lbs. oz. 
9 14 
7 10 
8 71 
7 121 
8 6| 
8 8] 
7 8 
lbs. oz. 
9 3 
9 2 
10 71 
9 121 
8 21 
8 14 
8 141 
lbs. oz. 
11 1| 
9 13 
9 9 
11 2 
10 41 
9 15 
On the average of this period the weight on the Sunday was 1 lb. 12 oz. greater . than 
on the Saturday. 
There was considerable variation in the progression from day to day in the different 
weeks ; but there was much uniformity in the general fact of a decrease in weight towards 
the end of tlie Aveek, and the increase at the beginning of the Aveek Avas Avithout excep- 
tion. During the first Aveek I made considerable physical exertion daily, but in the 
others the amount varied ; and the average Aveight of the body increased Aveekly, as 
follows: 8 lbs. 4 oz., 9 lbs. 3^ oz., and 10 lbs. 5 oz. + 13 stones. The difference in the 
average Aveights on the tAvo first and the tAVO last days of the Aveek Avas 1 lb. 5f oz. in 
fa\’our of the former ; but that in the extremes of single observations Avas 2 lbs. 3^ oz. 
There was not a very marked variation in the fluid and solid ingesta during the Aveek, 
except so far as related to the Sunday; but the folloAving Table offers some points of 
interest. 
5 p 
MDCCCLXI. 
