1st. The assistant keeping the lids well separated, the operator draws the eye upward and outward, and then inserting the scalpel at the inner and lower angle of the eye, with a gentle sweep separates the ball from the lids, extending the incisions through to the external canthus. 2d. The ball is now to be drawn inwardly and downward, while the scalpel, continuing the circular movement as far as the internal canthus, separates the upper lid. 3d. The muscles and optic nerves still bind this organ to the orbit, which attachments can easily be destroyed by the scalpel, by pulling the eye forward sufficiently to reach them. If the eye has been extirpated on account of any malignant disease, it is necessary to remove every particle of muscle from the orbit; and when the disease has extended itself to the lids, it will also be proper to remove that portion of them included in the affection. The hemorrhage from the operation is trifling, and may generally be arrested by the pressure of the fingers, or the insertion of a conical ball of lint within the socket, which may be allowed to remain two or three days if necessary. If there is nothing to apprehend from hemorrhage, it is only necessary to draw the lids together, and unite that portion which has been separated by a suture, and place a hood over the whole. We do not recommend the stuffing of the orbit with lint, except in case of hemorrhage, as its presence will sometimes produce violent inflammation, which may extend to the brain. The cavity of the eye will, in a measure, be filled up by newly formed matter. The dog must be restricted to a low cooling diet, and have administered two or three saline purges. ULCERATIONS OF THE EYELIDS are often met with in old mangy, ill-fed animals, and are difficult to overcome, except by curing the the primary affection, which is often no easy task. The lids become enlarged, puffy, and tender, the lashes fall out, and the edges present an angry reddish appearance. 'Treatment'--Must be directed, in the first place, to the curing of the old affection, by which, in connection with blisters, purging, stimulating washes, &c., a cure may be effected. When the swelling of the lids is considerable, scarifying them with the point of a lancet will often be of much service. Ointment of nitrate of silver may also be smeared on the edges. WARTS ON THE EYELIDS sometimes make their appearance; they may be lifted up with the forceps, and excised with a knife or scissors, and the wound touched with nitrate of silver. The same treatment will answer for those warts, or little excrescences, that sometimes come on the inside of the lids. ENTROPIUM--INVERSION OF THE EYELIDS. This disease we do not find mentioned by any of the writers on canine pathology: nevertheless, we are led to believe that it is not an uncommon form of ophthalmia; and we must express our surprise that it should have escaped the attention of such close observers as Blain and Youatt.