HUMAN ANATOMY. 



Name. Centres. 



Tarsus. 4 os calcis: 



1 for body and 

 1 for posterior extremity. 

 1 each for the following: 

 Cuboid. 

 Astragalus. 

 Scaphoid. 



Internal cuneiform. 

 Middle 

 External 



Metatarsus. 1 for each shaft 



and digital extremity, 

 except great toe, 'which is 

 same as thumb. 



Phalanges (2). 1 for each shaft and proximal ex- 

 tremity. 



Time of 

 Appearance. 



6th foetal month. 



9th month. 

 7th " 

 4th year. 

 3d 



4th " 

 1st " 



7th week. 

 3d year. 



