ANIMAL MECHANICS. 



477 



A = 26.2 



^= 0.666. 



7T 



The maximum value of n, and the time of lift correspond- 

 ing to it, are 



Air 



n= — = 19.65. 

 4u) 



t = — = 1.50 sees. 

 4 o> 



The value of w is the same as in the experiments made on 

 the right arm, viz. : — 



ay = 1.0472. 



Combining together all the values of o>, we obtain the 

 mean value of this important constant. 



Value of tj: 



1. Dr. Macalister, .... 0.9772 



2. Mr. J. Gilbert Haughton, . 0.9896 



3. Mr. Nipher, ; 1.0472 



Mean, 1.0046 



The angular velocity turns out, therefore, to be equal 

 to unity, so that the arc described in a second would be equal 

 to the radius, and the time of describing the quadrant would 

 be 



t = j = 1.5708 sec, 



and the maximum effect would be produced when the arms 

 are raised to the horizontal position at the rate corresponding 

 to an angular velocity equal to unity. 



