ANIMAL MECHANICS. 



483 



Experiments No. II.— Interval of red = 30 seconds, 



1st Effort, 

 41st „ 

 79th „ 

 99th „ 



From these data we have the following pairs of co-ordi- 

 nates, to determine from equation (143) the distance j3 of the 

 horizontal asymptote from the axis of x. 



x ■ 40 0=78 x = 98. 



y =10.47 # = 6 '5 8 # = 6.00. 

 The constants of the hyperbola turn out to be 



P - 4.23. 

 a - - 1.83, 



F = 171.74. 



From equation (144) we have 



Work done =30 (t + 1) » 30 x 5.23 ft. lbs., 



and, since the period of the cycle is 30 + 4.23 = 34.23 ; we 

 find as before 



Coefficient of Refreshment « 3° x 5 2 3 = Q l ^ 

 35.41 x 34.23 



Experiments Wo. Ill— Interval of rest = 15 seconds. 

 1st Effort, . . 60 seconds, . . (mean). 

 8th „ . . 10.64 „ . . 

 43rd „ . . 5.93 „ . . „ 

 92nd „ . . 4.02 „ . . „ 



From these data we find the following pairs of co-ordi« 

 nates 



a? - 7 x - 42 x ~ 91. 



y = 10.64 y - 5-93 y - 4-02, 



60 seconds. . . (mean), 



10.47 . . ,. 



658 „ . . 



6.00 . . „ 



