134 



ANIMAL MECHANICS. 



If we now collect into one Table, the observations made 

 upon the flexors of the hand, we shall find the difference be- 

 tween these and the flexors of the foot to be very remark- 

 able (vide Table XXII.) 



Table XXIV. — Comparative View of the Friction of the Deep 

 Flexors of Fingers. 



(A.) P > P'\ or Cross Section of Tendons of Fingers greater 

 than Cross Section of Tendons of Muscles. 



Friction. 



2. Wallaby Kangaroo (Halmaturus Ualabatus), . 



14.4 per cent. 

 i-7 



0.0 „ 





P' ; or Cross Section of Tendons of Fingers less 

 than Cross Section of Tendons of Muscles. 



Friction. 



8. Negro Monkey [Lagothrix JTumboIdtii), 



9. Japanese Bear ( Ursus Japonicus), .... 



1 1 . Virginian Bear ( Ursus Americanus), . 



12. Capuchin Monkey (Cebus Capucinus\ . 



13. Macaque (Macacus Nemestrinus), .... 



14. Sooty Mangabey (Cercocebus fuliginosus), . 



0.0 per cent. 



7.o » 

 20.7 „ 

 22.7 ,, 

 26.5 

 27.4 

 30.6 



35-0 

 35-3 

 40-7 



49- 2 » 

 7i.o 



The preceding Table demonstrates the fact, that in the 

 hand (or fore foot) of most animals, the cross section of the 

 tendon of the deep flexor, at the wrist, is greater than the 

 united cross sections of its branches subdivided to the various 

 fingers. In fact, the only animal, out of fifteen examined, in 

 which the reverse condition takes place, is the Llama, whose 

 fore foot, in its structure and mode of action, may be regarded 

 as being more truly a foot than a hand. 



