THE UPPER LIMB IN MAN. 



241 



ent use of his lower limbs, lie has in like manner (and to a 

 certain extent conditioned by his erect attitude) a completely 

 developed upper limb. 



/ 



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Fig. 11. 



Outline diagram of the skeleton of 

 the human foot, showing the outward 

 movement at the metatarso-phalan- 



geal joints. 



Fig. 12. 



Outline diagram of the skeleton of 

 the ape's foot, showing the inward 

 movement of the metatarso-phalan- 

 geal joints. 



10. The principle on which the completeness of the upper 

 limb in man is based consists in its purposes as an instru- 



Flg L8. 



Bole "f the human f"..t, ihow 

 log thegreal longitudinal 



i li. 



Soli- . if ape'a root, .showing its 



longitudinal gro< 



ment for acting on matter, in terms of his human faculty 

 of thinking in space. Bia erecl attitude gives him reach in 



