VERTEBRATA. 



279 



The hand is clumsier and 

 with a shorter thumb than 

 man's, and the foot is pre- 

 hensile, and is not applied 

 flat to the ground. 



Man is peculiar in his 

 dentition. His teeth are 

 vertical, of nearly uniform 

 height, and close together. 

 In every other animal the 

 incisors and canines are 

 more or less inclined, the 

 canines project, and there 

 are vacant spaces. 



Man possesses two mus- 

 cles (the peroneus tertius 

 and extensor primi inter - 

 nodii pollicis) which are not 

 found in the highest Apes. 

 The origin of two other 

 muscles is in Man alto- 

 gether different from Apes. 

 (The tibial origin for the 

 soleus, and the calcaneal 

 origin for the flexor brevis 

 digitorum^) 



The human skull has a 

 smooth rounded outline, 

 elevated in front, and de- 

 void of crests. The crani- 

 um greatly predominates 



FIG. 172. The Human Skeleton, a. Skull. 

 b. b. Vertebral column, or Spine, c. Ribs. 

 d. Sternum, or Chest bone. e. e. Scapulae, 

 or Blade bones. f. /. Clavicles, or Collar 

 bones, g. g. Pelvic, or Hip bones, h, h. Hu- 

 meri, or Arm bones, z. Radius, and j. Ul- 

 na, bones of fore-arm, k. Femur, or Thigh 

 bone. /. Tibia, or Large bone of leg. in. Fib- 

 ula, or Small bone of leg. n. Calcaneum, or 

 Heel bone. o. Tarsal bones, or Bones of 

 the foot. /. Carpal bones, or Bones of the 

 wrists. 



