244 DR. ROBERTS ON THE DIURNAL 
urine as to clearness or turbidity, when passed, and the 
colour, were also recorded. Frequently, too, the appear- 
ance on cooling or standing was noted, but the results do 
not appear in the following tables. 
To complete the record, the times of the meals and their 
nature were chronicled. 
The condition of the body as to exercise, occupation and 
sleep was also notified, but inasmuch as a single statement 
will suffice for all the particulars, the details are not here 
recorded, so as not too greatly to complicate the tables. 
The mode of life of the subject of experiment was kept 
as nearly as possible uniform during the time of observa- 
tion. He usually rose at seven, breakfasted at eight, 
dined at two, sometimes at four; and took no further 
solid food until breakfast next morning. He retired to 
rest at one in the morning; so that when the days of 
observation were successive there were but six hours of 
sleep. As to occupation and exercise there were neces- 
sarily some variations, but these were reduced to a mini- 
mum. Variously engaged in-doors until ten or eleven 
in the morning, moderate out-of-door exercise was after- 
wards taken until one or two. After dinner occupation 
was sedentary for two or three hours; then moderate out- 
of-door exercise was taken for one or more hours. Care 
was taken to avoid any violent or protracted exertion on 
the one hand or a complete inactivity on the other. 
Walking exercise for an hour or two did not produce any 
perceptible effect on the results, 
The experiments are divided into six sets; each set 
embracing from three to seven days; and the results for 
the separate days are collected into a single table of 
averages, which shows the mean quantities for the days 
composing the set. The observations on the reaction, 
however, are given in detail for each separate day, and 
form a companion table to each table of averages. 
