VARIATIONS IN THE ACIDITY OF THE URINE. 255 
It is seen by Tables V., VI. and VII. that moderate use 
of malt liquor did not perceptibly affect the results. A 
supper of meat and bread with a pint of ale had not the 
power of lowering the acidity of the night urine; on the 
contrary, the discharge of acid per hour was considerably 
above the average in Table III. for the nights on which 
no supper was taken; and the acidity per 1000 was at least 
as high as the general average. The effect of breakfast was 
decidedly less when a meat supper had been taken the 
night before. 
In Table VIII. may be recognized a very unsusceptible 
day— more so than any met with during the whole course 
of the observations. 
2. The Effects of purely Vegetable Food. 
Two sets of observations were made with a view of 
ascertaining how far a diet exclusively composed of vege- 
table matters (excluding sweet and subacid fruits) affected 
the reaction of the urine. 
In the First Set, which included four days, there was 
always takeu a hearty supper of mixed food the night 
before. Only two of the days were consecutive, the others 
alternated with days on which a purely animal or a mixed 
diet was used. The observations extended from seven in 
the morning until about eleven at night. 
