OF TJEEA AjST> UEINAET WATEE. 
785 
Relations of Urinary Water. 
Table XAT!. shows that the relations of urinary water to period of the day are very 
similar to those now described in reference to urea. The average rate at all hours 
combined was 2‘21 fluid ounces, whilst that of the night was reduced to 1T9, and the 
basis quantity to 2*05, but the quantity evolved to midday was increased to 4’41 fluid 
ounces. The decrease in the night and at the hour of the basis quantity, as compared 
to the whole day rate, was 46 and 7‘2 per cent., and the increase at midday was 100 
per cent. 
The night rate varied in the different months from '93 to 1'59 fluid ounce per hour; 
but its position in reference to the rates at the other periods of the day was uniformly 
maintained in every month, and also in every week, during the year, except on two occa- 
sions (May and June), when it was equal to the basis quantity. Plate XXXIII. shows 
that in only six instances throughout the year did the night rate equal or exceed the 
whole day rate ; and the increase was only to the following amount : — 
May 20. May 31. Jime 21. December 6. December 30. February 23. 
T fl oz. ‘ISfl. oz. ’ISfl. oz. •26fl. oz. ’07 fl. oz. T8fl. oz. 
There were, however, seventeen instances, as is shown in the following Table, in which 
the relative positions of the night and basis rate were reversed, and the former exceeded 
the latter. 
Table XV — Showing the exceptional instances in which the night rate of elimina- 
tion of urinary water exceeded the “ basis quantity,” and the amount of increase. 
The seven instances marked with an * correspond with the exceptional instances in 
reference to urea in Table XII. 
I860. 
Fluid ounce. 
Fluid ounce. 
April 
14 . 
.... -9 
June 
3* .. 
•34 
21 . 
.... -24 
21* .. 
.... 1*31 
25 . 
.... -72 
23 .. 
•1 
May 
5# . 
.... -61 
December 
16 .. 
•12 
9* . 
.... -47 
February 
2 .. 
•1 
12* . 
21 .. 
.... -49 
20 . 
.... -83 
23 .. 
.... -47 
24* . 
.... -68 
May 
2* .. 
•41 
31 . 
.... -13 
If we omit reference to the variation on June 21, the exceptions are not important ; 
and as they form so small a proportion of the whole, they do not invalidate the general 
law. Hence it is established that the night rate of the emission of urinary water is less 
than the whole day rate, and than the “basis quantity.” 
The “ dasis quantity” exceeded the whole day rate in two months, viz. J une and March, 
to the extent of '25 and T2 fluid ounces; and in the various weeks the exceptions to 
the rule were so numerous as 41 per cent, of the whole, and varied from 0 to *8 fluid 
ounce. There were sixty-two exceptions in the various days of the year, vaiying from 
