176 



ANIMAL MECHANICS. 



divided by the distance of its point of insertion from the axis 

 of the joint ; the ratios of the angular motions caused by the 

 two muscles is shown in the following Table : — 



Table XXIX. — Angular Motion produced by the Biceps and 

 BrachicBus Muscles. * 





Biceps. 



BUACHIiEDS. 



Ratio of Angu- 

 lar Movement, 

 produced by 

 Biceps and 

 Brachiseus. 



Length. 



Distance of 

 Insertion. 



Length. 



Distance of 

 Insertion. 





In. 



In. 



In. 



In. 





Nylghau, . 



2.85 



I.02 



8.0 



2.26 



0.789 



Ass, . . . 



i-i5 



1.24 



9.0 



2.00 



O.206 



Sambur, 



3-°9 



1.72 



9-5 



2.44 



0.461 



Lioness, 



8.00 



2.29 



8-75 



2.16 



O.862 



Bringing together all the preceding results, we obtain the 

 following Table : — 



Table XXX. — Comparison of the Action of the Biceps and 

 Brachiceus Muscles. 





Ratio of Forces. 



Ratio of Velocities. 



Ratio of Angular 

 Motions. 



Nylghau, . . . 



2.80 



1.26 



O.789 



Ass, .... 



16.47 



10.21 



0.206 



Sambur, . . . 



3-67 



2-59 



O.461 



Lioness, . . . 



2.82 



' 3.00 



0.862 



Man,* .... 



1.50 



1.82 



i-i59 



The i^ss greatly exceeds the other animals in the relative 



* The data from which the comparison of the Biceps and Brachiceus muscles 

 in Man is made are given in pp. 63, 64. 



