VARIATIONS IN THE ACIDITY OF THE URINE. 247 
On these four days the urine became alkaline both after 
breakfast and after dinner; and the effect of dinner is ob- 
served to be more intense, as well as more enduring, than 
that of breakfast. In constructing this and the succeeding 
tables of means a difficulty arose as to how to deal with 
those hours which on some of the days exhibited an acid, 
and on others an alkaline urine, such for example as from 
ten to eleven and eleven to twelve. The plan adopted has 
been to take a separate mean for the acid days and a 
separate mean for the alkaline days. This will explain 
why at these hours the urine is made to appear both acid 
and alkaline. Any obscurity or inconvenience arising 
from this will be obviated by a study of the companion 
tables, which give in ewtenso the daily results for the acid- 
ity and alkalinity. 
TABLE II. exhibits the hourly Variation of Reaction for the days 
composing Table I. The Plus sign is prefixed when the urine 
was Acid, and the Minus sign when Alkaline. 
Sept. 30, Oct. 4, Oct, 13, Oct. 21 
First day Second day Third day Fourth day 
Fa | ee eens om | fae Se NM Lao Diet 
Per 1000 | °F. | Per 1000 | ,Per | Per 1000] jPer | Per 1000 | 
= eee) Seealie ay 
7-8 | +1°88}+0°90]) +2°16/+0:81)| + 1:20] + 0°83]| + 1:56) + 0°80] Breakfast at 8. 
Tea with sugar 
+0°90}+0°77|| +1:46] + 0°94'| + 0:28] + 0°21|/ + 1:00) + 0°74)! and cream - 
— 1-00] -0°95|| — 0°64) — 0:55!| — 0°84! -0°81|| 0-00} 0°00) grica toast 
-1°32)-1°45]| + 0-20} + 0:21) — 0°42) — 0°44|| + 0:24. : with broiled 
— 0°38}—0'55|| + 0°68) + 0°45)| + 0:09] + 0°18/| + 0°42) + 0°42)! bacon, or eggs, 
000} 0:00|| +0:94) + 0°52)| + 0°16) + 0°15]| + 0°72) +.0°75]| op pork chop. 
+0°41|+0°28]} +1-18] + 0:62) + 0°64) + 0°81|| + 0-42} +0: 
+0'22|+0:15|| +228] + 1-03)) + 0:88) + 0°68]| + 0°62 
+0°32|+0°30|| + 2°52) +0°76) + 1:40! + 0°77] + 0°72 
+128] +0°66|| + 2°36) + 0°83!) + 0°80) + 0°40) + 1°56] + 0°83) Dinner at 4. 
+ 0°06] + 0°28)| + 0:26] + 0:33/| — 0:58} — 1:37]| + 0:28} + 0:59} Meat, potatoes, 
— 0°84) —0°88]| - 0°20) -— 0°15)| — 1-48] — 1°30) — 1°46} — 1°68) bread, cheese, 
— 1°30) -1°79|, - 0°76] - 0°58)| — 1:00) — 0:97)| — 0:25] - 0°14) beer. 
— 0°62) — 0°86]; -— 0°78} — 0°'78)| -- 0°56) — 0°58)| — 0°18] — 0°15) At 9 two cups 
+ 0'36|+1°02)| + 0°86) + 0°45||-0:26]-0°58|| 0°00) 0:00)) of coffee with- 
+0°60)+1°77|| +1:22)+ 1:05) + 1:20) + 1:27) + 0°44) + 0°86|| out sugar or 
+ 0°54) + 2°02)! +1-00) + 1°55)| + 2°28) + 1:27|| + 1°48} + 0'96)| cream. 
+0:96) + 1:39)) | + 1:62| + 0'89]| + 1:92] + 0-92! 
1-7 oon |¢ + 1°70) + 1:18] + 0°74, + 0°69) + 1°86) + 0:80 
7-6 |} +116] +097) (+124! +0511] + 2:24] + 0°67) 
