Abscesses which penetrate deeply along the sheaths of muscles and tendons, or even to the bones are termed FISTULAS. Shallow abscesses are known as ulcers, and these may be mild, readily healing, and secreting a healthy, thick, cream-like pus; or ill-conditioned, unhealthy, secreting a thin sanious discolored matter, and healing with great difficulty. Such are the general characteristics of all abscesses, wherever located, and their situation and extent mark their relative importance and danger. TREATMENT.—During the inflammatory stage or before softening, while there is merely a hard, more or less hot and painful tumor, we should endeavor to disperse it without its softening. To this end, give three times per day, ten drops of A.A., and also bathe the tumor as often with HUMPHREYS’ MARVEL WITCH HAZEL which will frequently disperse it. But if the swelling increases and fluctuates, or a yellowish spot is observed in its center, denoting the presence of matter, it should be lanced at once, in the most depending portion, and the matter drawn off, and fifteen drops of the I.I., should be given morning and night to facilitate the healing. Apply the VETERINARY OIL to the cut or open sore with end of the finger, three times per day, to facilitate the healing. For ULCERS or SORES, apply the VETERINARY OIL, as above. In fistulas where the canal is long and crooked, or runs into cavities of pus, it may be laid open with the knife, so as to heal from the bottom, or better, the VETERINARY OIL may be injected daily, with a small syringe, or the OIL may be inclosed in a _gelatine capsule_ and gently pressed down into the bottom of the cavity, after having pressed out the accumulated matter. The use of the capsule (which may be had for a trifle at the druggists, or from this Company), is the safest and most convenient. Abscess of the Poll, Poll Evil Is often from neglect a very formidable disease. It is generally the result of severe injury upon the top of the head, such as the chafing of the bridle or halter, pressure, or a blow against the manger or stall, or frequent hanging back against the headstall. SYMPTOMS.—At first a tumor forms at the polls or junction of the head and neck. It soon becomes hot, tense and painful; the horse carries his head low; looks to one side; eats but little from the pain of chewing, especially if the food is hard. If the tumor is not dispersed, it comes to a head, either discharges externally, or the matter failing to come to the surface, sinks downward, burrowing along beneath the surface among tendons, ligaments and bones, forming deep and obstinate fistulous ulcers. TREATMENT.—Before the tumor has softened, give the A.A., fifteen drops three times per day, keep the horse on low diet, and bathe the swelling frequently with HUMPHREYS’ MARVEL WITCH HAZEL. This course will usually disperse the swelling or should it fail to do so will limit it to the smallest possible extent.