Abscesses occasionally form in the flap of the ear. They may occui without any apparent cause but are more commonly the result of blows or tugging at the ear. The constant shaking of the head induced by canker may be sufficient to give rise to abscesses.

Their contents are usually watery in character and they have the peculiar baggy appearance of large blisters. An opening should be made in the lowest part of the abscesses; this must be large and free, and kept open until the sack has entirely closed. This treatment and perfect cleanliness will ordinarily be quite sufficient. If matter forms and a running sore results, the oxide of zinc ointment will readily heal it.

At times an eczema of the flap occurs independently of a general manifestation of the disease. This condition if not induced by constant scratching is almost always aggravated by it. The treatment of this affection is identical with that of mange.

A dry, scaly condition of the external passage of the ear involving the inner portion of the flap may exist, and often follows acute inflammations of that organ. The affection annoys the animal exceedingly, induces constant scratching. In the treatment the following will be found efficacious. -

℞ Zinci Sulphooarb. gr. vi Aquae ℥ i.

Ft. Mist. Sig. Drop in the ear three or four times daily.

At night it will be well to freely apply this ointment to the external parts affected. -

℞ Ungt. Hydrarg. ℥ i.

Ungt. Simp. ℥ iij.

Ft. Ungt. Sig. External use.

Constitutional derangements should be sought for, and if found, are to be treated as the need is manifest.

Othematoma or blood tumor of the ear is a form of disease said to affect dogs, an account of its occurrence in which,has been given by Mr. S.Ogier Ward. Wilde states that he observed the trouble in a valuable pointer.

The cat is rather more liable to the affection. One case has been described where the entire auricle was swollen out, the affected organ forming a long pointed tumor. The effusion was gradually absorbed, thickened, and shrivelled. In this instance the presence of a cutaneous trouble at the upper and back part of the auricle was noted.