anatomy of the horse. 
85 
lient or posterior angle, has on its external side a surface for arti- 
CU Connexion— Wdin the astragalus, cuboid, middle, and small 
cuneiform bones. 
THE MIDDLE CUNEIFORM BONE. (OS CUNEIFORMS MEDIUM). 
Situation —Underneath the large cuneiform; upon the hind 
cannon bone.— Figure and Division, the same as the large bone. 
Saverior and inferior surfaces, also similar: the former articu¬ 
lates with the large bone; the latter with the hind cannon bone. 
The salient angle, behind, is sharper and more projecting .nea 
its pohiC externally, is a’small surface for articulation with the 
cuboid. 
the small cuneiform bone, (os cuneiforme paryum.) 
Situation —Postero-internal part of the hock. Figure— small: 
1Tre §ormexion —Superiorly, it articulates with the internal angle 
of the large cuneiform; anteriorly, with the same ang e o 
middle cuneiform; below, principally, with the internal hin sp in 
bone; partly, also, with the hind cannon bone. 
THE METATARSAL HIND CANNON OR SHANK BONE. 
(OS METATARSI MAGNUM.) 
As the cannon bone of the fore leg is said to be a match for 
one of the longest metacarpal bones lound in the human h. , 
so this bone, in comparative anatomy, is regarded as a fellow of 
one of the metatarsal bones which compose the foot, although 1 
in the horse, the bone of the hind leg. It so nearly resembles 
the fore cannon bone, that the two, at first sight, appear to be pie- 
ciselv alike : there are differences, however, between them, and, in 
particular, three:—1st, The bone of the hind leg is longer by 
about one-sixth part than the bone of the fore leg ; 2dly, the 
body of the former is rounder and more prominent anteriorly than 
that of the latter; 3dly, the superior articulatory surfaces aic 
different; one being such as is adapted to the middle and sma 
cuneiform and cuboid bones; the other accommodates the mfenoi 
row of the bones composing the knee. A , rTr , TT 
The PASTERN, SESAMOID, CORONET, COFFIN, and NA Cl 
lar bones of the hind extremity, so closely resemble their fellows 
in the fore, that the description already given ol the latter, will be 
found to answer here. 
[To be continued.] 
