A. 



B. 



^ - ;,m}i -lis. 



^^W 



a. 



c. 



- 



ill 



>'•«' ^ 



tvi ,«< 



mm 



m. 



Fig. 23.— Plantar surface of the foot of— A, man ; B, 

 dog; C, horse. The letters a, b, and c indicate 

 the corresponding points of the three. Compare 

 also Fig. 7, p. 47. 



