216 



This quantity increased with increase of urinary water above, and de- 

 creased with decrease of that fluid below the average ; but the former 

 in much higher proportion than the latter. 



4. The average hourly emission of urea was on the whole day 

 21'7 grs. ; during the night 16'5 grs. ; before breakfast 20'3 grs. ; 

 and before midday 25*5 grs. The decrease of the night was 24, 

 and of the early morning, or " basis quantity," 6*4 per cent., whilst 

 the increase to mid-day was 17^ per cent. The "basis quantity" 

 was so much influenced by the amount of urine passed on the pre- 

 vious day, that it was not a good standard of comparison for its own 

 day. 



The greatest increase of urea followed the breakfast, and the next 

 followed the tea meal ; whilst there was a considerable decrease at 

 and after the hour of the early dinner. When an examination was 

 made every of an hour, a maximum increase of 54*6 grs. of urea 

 and 21 oz. of urine per hour was found. 



5. There was the same general relationship of urinary water to 

 the period of the day, but there was scarcely any increased evolution 

 of that fluid in the afternoon. 



6. Water taken several times during a day of fasting caused the 

 same hourly progression in the elimination of urea and urine as 

 occurs with food, except that the changes were more rapid and the 

 decrease at the end of the intervals was greater. The maximum 

 was 34*5 grs. of urea, and ITS oz. of urine. 



7. When water was taken thrice before midday, and without 

 breakfast, there was a large and rapid elimination of urea and urinary 

 water ; but when bread, tea, coffee, and black draught were added, 

 the elimination was retarded. Alcohol with water, taken once before 

 breakfast, caused within two hours an increase of 38 to 108 per cent, 

 of urea, and 246 to 554 per cent, of urine. 



8. With a daily dietary of bread and water, the hourly elimination 

 was the same as with ordinary food ; but when tea and coffee were 

 added, there was a less morning and a greater evening increase of 

 urea ; but the amount of urine was altogether lessened. 



9. There was the largest elimination of urea, carbonic acid, and 

 faeces on the Sunday ; and on that day there was much more rest, 

 an increase of solid food, and a daily gain in weight of from 1 Ib. 6 oz. 

 to 2lb. 3oz. 



