190 Prof. S. Ringer and Mr. A. P. Stuart on the 



8 days, the evening fall began at 6 p.m. 



^ J 11 11 11 11 * 11 



1 day „ „ „ 9 „ 



In this Table we have not restricted ourselves to the observations con- 

 tinued during both day and night, but have used other observations in 

 which the temperature was noted only till a late hour in the evening, as 

 these, it is obvious, may be fairly used for our present purpose. 



This Table proves, still more strongly than a foregoing one, that if our 

 observations are continued till 8 p.m. our observations will include the 

 maximum daily temperature of the day in boys of the age of these lads. 



It shows also that in persons of their age the evening fall usually 

 begins between 5 p.m. and 7 p.m. ; but it likewise shows that exceptions 

 occur, for the evening fall may begin either before or after the time 

 stated. The fall, however, happens more frequently before than after. 



The Hour when the Morning Rise begins. 

 This varies greatly. Thus on 



4 days this began at . . . . 3 a.m. 



1 day „ „ 4 „ 



1 11 5! 11 5 ,, 



1 11 11 11 " ^ 11 



1 11 11 11 '11 



From this we may conclude that in lads of about 12 years old the 

 morning rise usually begins between 3 a.m. and 7 a.m. 



The chief part of the rise was completed by 9 a.m. After this hour the 

 temperature usually remained at much the same height, until the evening 

 fall began. Thus on 



4 days the temperature remained much the same 



from 9 a.m. to 5 p.m. = 8 hours. 

 1 day „ „ „ 10 „ 6 „ =8 „ 



1 n ?j ii ii 10 5, 5 ,, =7 



i q a 7 



J- ii ii ii ii u ii ^ ii — » ii 



On one day the temperature remained much the same from 8 a.m. to ' 

 1 p.m., then fell very slowly till 8 p.m. ; afterwards the fall was much 

 more rapid. 



Hence it would appear that in boys of the age of 12 the temperature 

 continues at about its maximum for 7 to 8 hours. 



The Time at which the Maximum Depression was reached 

 varied greatly in these lads. Thus on 



1 day it was reached at 7 p.m. 



2 days „ „ 9 „ 



1 day „ „ 10 „ 



1 ii ii ii 11 " 



1 ii ii ii 12 ,, 



2 days „ „ 1 a.m. 



