OF TJBFA AKD UEmAHI WATEE. 
773 
There is so great a Tariation in the amounts o£ urea recorded, in every part of the 
Table, that at first sight it appears to be impossible to eliminate any general law. In 
every decade of ounces of urine the variation in the amount of urea, in even the same 
month, extends to from 50 to 200 grains; and this is equally true whether we regard the 
medium or the extreme quantities. When, however, we make an average of the whole 
observations in each month and under each decade, we find that they arrange themselves 
on a general plan. The following Table contains the average of all the observations 
made during each month, arranged in the order of the ascending decades of ounces of 
urine. 
Table WI. — Showing the average relation of the amounts of Urea and Urinary Water at 
each month of the year, and in every decade of ounces of urine (omitting decimals). 
I860. 
1861. 
Mar. 
Apr. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Not. 
Dec. 
Jan. 
Feb. 
Mar. 
fluid oz. 
90 to 100 
grs. 
grs. 
grs. 
grs. 
grs. 
grs. 
grs. 
grs. 
grs. 
grs. 
grs. 
grs. 
gi-s. 
460 
80 to 
90 
534 
655 
693 
• • • 
543 
70 to 
80 
452 
522 
642 
518 
638 
739 
611 
484 
586 
60 to 
70 
423 
465 
546 
532 
473 
669 
633 
566 
473 
468 
450 
500 
504 
50 to 
60 
489 
476 
576 
552 
505 
645 
• • • 
463 
472 
496 
543 
533 
491 
40 to 
50 
455 
545 
543 
545 
479 
469 
431 
463 
525 
489 
470 
30 to 
40 
449 
505 
512 
527 
635 
485 
432 
415 
471 
480 
460 
20 to 
30 
421 
511 
510 
503 
... 
... 
467 
472 
411 
Omitting any reference to the unique instance of the emission of upwards of 90 fluid 
ounces of urine in one day, we find that the following unbroken order occurs as we ascend 
in each decade, commencing with the second. Thus — 
Table VIII. (Plate XXXII. fig. 3.) 
Urine (fluid oz.)... 
20 to 30 
30 to 40 
40 to 50 
50 to 60 
60 to 70 
70 to 80 
80 to 90 
Urea (grs.) 
470 
490 
492 
520 
531 
577 
606 
The decade from 50 to 60 fluid ounces represents the average quantity of urea and 
urinary water evolved daily throughout the year, whilst the superior decades represent 
the larger, and the inferior the lesser quantities of urea. 
But although the lines of urinary water and urea run parallel to each other, there is 
not a precise con-espondence in the daily excretion of these two substances, as the 
following Table shows : — 
Table IX. — Shoufing the weight of Urea in each fluid ounce of Urine, arranged in 
the ascending order of the middle of each decade of ounces of the latter (Plate 
XXXII. fig. 4). 
Urinary water (fluid oz.)... 
25 
35 
45 
55 
65 
75 
85 
Urea (grs.) 
18-8 
14 
10-9 
9-4 
8*1 
7.7 
7*1 
5 M 2 
