DISSECTING MANUAL. 



has a saddle-shaped facet, concave vertically and convex trans- 

 versely, for the os calcis. [247] 



Metatarsal Bones. These resemble the metacarpals but are 

 longer, while the bases are larger and the shafts and heads 

 smaller. They are numbered from within outward. First (the 

 shortest and stoutest). The base is widest vertically; at its 

 end is a reniform facet for the internal cuneiform; the inferior 

 angle projects (tubercle) backward and outward. The shaft 

 tapers rapidly. The head has on its end a convex facet, for the 

 phalanx, and this is confluent with a facet on its under side 

 which is divided by a median ridge into two grooves for sesa- 

 moid bones. Second (the longest) . The base is wedge-shaped; 

 at its end is a facet for the middle cuneiform ; on its inner side, 

 high up, is a facet for the internal cuneiform ; on its outer side 

 are two facets, each divided into anterior and posterior parts, 

 for the third metatarsal and external cuneiform respectively. 

 The shafts of this and the remaining metatarsals are thin, and 

 the ends of the heads are convex. [249] 



Third. The base is wedge-shaped; at its end is a facet for 

 the external cuneiform, and on its inner side one or two facets 

 for the second metatarsal; on its outer side is a facet for the 

 fourth metatarsal, and below this is a groove. Fourth. The 

 base is cubical ; at its end is a facet for the cuboid ; on its inner 

 side is an elongated oval facet, divided by a vertical ridge, for 

 the third metatarsal in front and internal cuneiform behind; 

 on its outer side is a demi-oval facet, slightly saddle-shaped, 

 for the fifth metatarsal. Fifth. The base has, at its end, a 

 semicircular facet for the cuboid, and on its inner side a demi- 

 oval, concave facet for the fourth metatarsal; a tubercle pro- 

 jects backward and outward from the outer side. [251] 



Phalanges. These resemble those of the fingers but are 

 much smaller, and the shafts, especially in the first row, are 

 much compressed longitudinally. In the first row the proximal 

 end is large and has a simple hollow ; the distal ends have con- 

 dyloid surfaces. In the second row the proximal ends each 



[258] 



