140 



BOXES OF THE FOOT. 



metatarsus, c the phalanges of the toes. The TAESUS con- 

 sists of seven bones arranged in two rows. In the first row 

 139. (fig. 139) is the astragalus (i), os 



naviculare (n), os calcis (in). The 

 articulation with the leg is formed 

 by the astragalus, which projects 

 above the rest, and fits into the 

 space between the tibia and the 

 fibula. The astragalus (i) rests upon 

 the heel bone, os calcis, (in), which 

 projects backwards, and is connected before with the navi- 

 cular bone (11). The second row (Fig. 140) consists of three 



Fig. 141. wedge-shaped 



bones, ossa cu- 

 nciformia (rv, 

 T,VI), and the 

 cuboid bone, 

 os cuboides 

 (YII). The con- 

 cave posterior 

 surfaces (i, i, i, i) articulate with the first row of the tarsal 



Fig. 140. 



Fig. 142. 



bones and the convex an- 

 terior surfaces (fig. 141, 2, 

 2, 2, 2) with the metatarsal 

 bones. 



[ 267. The METATAEsrs 

 consists of five bones (fig. 142), 

 of which the first, or that of the 

 great toe, is the shortest and 

 largest, and that of the second 

 he longest. The bases (A) 

 have flat articular surfaces to 

 join them with the tarsus, and 

 heads (c) or articular sur- 

 faces for the phalanges ; the 

 middle part is the body (B), 

 which is convex above and 

 broad beneath. 



[ 268. THE TOES consist of 

 fourteen bones (fig. 143), of 

 which there are but two rows 



Under surface. 



