The first experiment was on a setter with canker in his ear. The owner of the dog had ordered it to be hanged, as all remedies had failed in producing a cure. Herr Maassen prescribed creosoti 3ss. et spirit, vini rectificat. 3ij. This mixture was applied once in every day to the diseased part. In a few weeks the dog was completely cured, and has since had no return of the complaint. In a terrier, and also in three spaniels, the effect of this application was equally satisfactory. In some cases, where the disease showed itself in a less degree, the creosote was dissolved in water, instead of spirit of wine. It is always necessary to take away the collar while the dog is under treatment, in order that the flap of the ear may not be injured by striking against it. VEGETATING EXCRESCENCES IN THE EAR. (By F. J. J. Rigot.) Productions of this kind, which he had the opportunity of observing only once, are sometimes united in masses, and completely close the auditive canal. The surface is granulated and black, and there escapes from it an unctuous fetid discharge. On both sides the animal is exceedingly susceptible of pain, and the excrescences bleed if the slightest pressure is brought to bear upon them. He thought it right to cut away these excrescences bodily, which he found to be composed of a strong dense tissue, permitting much blood to escape through an innumerable quantity of vascular openings. They were reproduced with extreme promptitude after they had been cut off or cauterized. Some of them appeared no more after being destroyed by the nitrate of mercury. Sometimes, however, twenty-four hours after a simple incision, not followed by cauterization, these productions acquire an almost incredible size. It seemed, in M. Rigot's case, to be impossible to conquer the evil, and the patient was destroyed. ERUPTIONS IN THE EAR. A Newfoundland dog had long been subject to mangy eruptions on the back and in the feet. They had suddenly disappeared, and the whole of the inside of the ear became covered with scaly eruptions. The skin was red; there was considerable thickening of the ear, and a discharge from the base of it. The canker-lotion was used, a physic-ball given every second day, and a seton inserted in the poll reaching from ear to ear. No apparent benefit resulted. A little calamine ointment, to which was added one-eighth part of mercurial ointment, was then tried, and considerable benefit immediately experienced. The dog no longer continued to scratch himself or to shake his head, and the ear became clean and cool. The seton was removed, and nothing remained but a little occasional redness, which the lotion very soon dispersed. The owner, however, became ultimately tired of all this doctoring, and the animal was destroyed.