ANIMAL MECHANICS. 357 



The resulting relation between a and a', which is the mean of 

 the three different combinations, is 



3.04 a + 9.92 a' + 2.43 = o. 

 From this relation we find, as before, 



1.25 a 2 - 0.02 a - 7.43 = o, 

 ^ = j + 2.44 a , = ( - 0.99 

 (-2.44 " ( + 0.50 



Adopting the second pair of values, which correspond 

 with the question in hand, we find : — „ 



African Leopard — Adductor secundus (a). 



a = 



- 2.44 in. 



a 



= + 0.50 in. 



ai = 



- 1.61 „ 



a/ 



= + 3-2o „ 



«2 = 



- 0.78 „ 



o 2 7 



= + 5-9° » 



a 



P ~ 



- 0.687 



a' 

 P 



= + 0 . 1 4 1 



Cll 



P^ ~ 



- 0.380 



0/ 

 Pi 



= + 0.755 



a 2 _ 



P* ~ 



- 0.122 



a* 

 P-2 



= + 0.919 





- 1. 189 





= + 1. 815 



Hence, as there are three fibres employed, we find 



L L ' 



- =-0.396, -p - + 0.605, 



P*±L121* 9 P = 3 8 2 in., 



* °-35 

 Z = - 1.5 1 in., L 1 = + 231 in„ 



