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.