There are two distinctly recognized forms of fistula, the complete and the incomplete: the latter, having only one opening, either external or internal; if the opening is internal, it is termed, "blind fistula." The complete fistula has two openings, usually, one external and one internal, but in some cases, both openings are external. Fistula is almost invariably the sequel to a neglected abscess, therefore, any form of gathering in the buttocks, should be promptly attended to. Fistula may result from an injury; but the large majority of cases are due to a congested or diseased condition of the sigmoid flexure and rectum. TREATMENT. It need scarcely be said, that scrupulous care and cleanliness are indispensable factors in promoting recovery, therefore, the colon must be kept absolutely clean, by the use of the "Cascade" and the parts `thoroughly bathed with warm water, at least, once daily, and the pipe of the fistula should be thoroughly cleaned three times a day, with the following solution: To half a cupful of warm water, add twenty- five drops of fluid hydrastis and one teaspoonful of finely pulverized willow charcoal. This should be mixed thoroughly and injected into the opening of the fistula, the whole of it, with a small piston syringe. If the opening is not external, then, double the quantity should be injected into the rectum. This practice should be persisted in until the discharge ceases. In some cases, operations are absolutely necessary. All stimulants should be avoided and all highly seasoned foods. DISEASES OF CHILDREN. The following simple methods of treating the ailments of childhood will be found remarkably efficacious, easy of application, and may be used with confidence. CROUP. This disease often runs in families, and is most frequently caused by sudden alterations of temperature. The symptoms are usually a harsh cough, hoarseness, sore throat, and slight fever. A croupy child needs watching. To prevent it, keep the colon clean. The treatment cannot be too prompt. Use the "Cascade" quickly, and place the child immediately in a hot bath, and rub the lower limbs thoroughly. Wring a cloth out of cold water, and place it on the throat and chest, covering it with a thick flannel to exclude the air. Change the cloth as often as it gets dry. SCARLET FEVER.