Taking the limit we have set, and enumerating the parts within the hoof
from within outwards, we find them as follows:

A. THE BONES.--The lower portion of the second phalanx or os coronæ; the
third phalanx, os pedis, or coffin bone; and the navicular or shuttle bone.

B. THE LIGAMENTS.--The ligaments binding the articulation.

C. THE TENDONS.--The terminal portions of the extensor pedis and the flexor
perforans.

D. THE ARTERIES.

E. THE VEINS.

F. THE NERVES.

G. THE COMPLEMENTARY APPARATUS OF THE OS PEDIS.

H. THE KERATOGENOUS MEMBRANE.

I. THE HOOF.


A. THE BONES.

THE SECOND PHALANX, OS CORONÆ, OR SMALL PASTERN BONE.--This belongs to
the class of small bones, in that it possesses no medullary canal. It is
situated obliquely in the digit, running from above downwards and from
behind to before, and articulating superiorly with the first phalanx or os