Consists of an enlargement and ossific deposit (near the fetlock joint) in consequence of a strain and inflammatory action. It may appear on one or both sides of the foot, or completely surround it, giving rise to the name. One or more feet may be affected by it. It is generally recognized by a mere bony enlargement on one or both sides of the pastern, and the lameness is not very considerable. TREATMENT.—At the commencement bathe the part with HUMPHREYS’ MARVEL WITCH HAZEL or VETERINARY OIL from day to day, and give fifteen drops of B.B., three times a day. In chronic cases, give a dose morning and night, or even only once per day. Cases of considerable standing will materially improve, and recent or fresh cases may be permanently restored. Thrush and Canker This disease is an inflammation of the lower surface of the sensible frog, which secretes matter of a peculiar offensive smell, instead of healthy horn. The matter issues from the cleft of the frog. In a sound frog the cleft is shallow, but when contracted or otherwise diseased, the cleft deepens even to the sensible horn within, and through this the matter issues. Afterwards the discharge becomes more abundant and offensive; the frog wears off and a fresh growth of horn fails to appear. It then becomes thin, shriveled, contracted and fissured; and as the disease extends, the matter becomes still more fetid, and may terminate in a yet more unmanageable form of disease, namely, _canker_. In Thrush, the frog is painful when pressed upon by the thumb or pincers, or when the animal treads upon a stone. As a consequence of neglected thrush, the horn may separate from the sensible part of the foot, and unhealthy vegetations, proud flesh, fungous matter spring up, occupying a portion or the whole of the sole of the frog, and finally involving frog, sole and bars, in a mass of putrefaction, constituting the worst form of _canker_. TREATMENT.—As thrush is often caused by uncleanliness and constant moisture of the feet, the greatest care must be taken to keep them dry and clean, and especially from dung and urine. If connected with contracted fore-feet, particular care must be given to shoeing.