80 



THE HUMAN BODY. 



the great toe (or Jiallux) there are two phalanges, in each 



of the others three, arranged as in the fingers, but smaller. 



Comparison of the Anterior and Posterior Limbs. It 



FIG. 31. 



FIG. 30. The bones of the arm. a, humerus; 6, ulna; c, radius; d, the carpus: 

 e, the fifth metacarpal; /. the three phalanges of the fifth digit (little finger); 

 g, the phalanges of the pollex (thumb). 



FIG. 31. Bones of the leg. a, femur; 6, patella; c, tibia; d, fibula ; h, calca- 

 neum; e, remaining tarsal bones; /, metatarsal bones; g, phalanges. 



is clear that the skeletons of the arm and leg correspond 

 pretty closely to one another. Both are in fact quite alike 

 in very early life, and their differences at birth depend upon 



