Care should be exercised to avoid the distention of the colon by an excessive amount of water, and, after the colon has been thoroughly cleansed, the amount of water used should be decreased from day to day, until finally only 1 pint is used. Warm water is always relaxing, whereas cold water stimulates and tones up the bowel. If the quantity of water used is small, the cold coloclyster may be used indefinitely without producing constipating effects. Great care must be used to avoid the introduction of air into the bowel with the water; to this end the water is allowed to run out of the nozzle before its introduction into the rectum. A small-sized nozzle should always be used, and this should be lubricated with vaselin or some other emollient, in order to prevent irritation of the mucous membrane. =Vaginal Irrigations.=—To be of any service the vaginal douche should be taken in the horizontal position. It may be taken on the bed, couch, or lying on the floor. When taken on the floor, a heavy rug or steamer blanket should be doubled four times, and two pillows are used: the under one goes up and down for the support of the back, while the second is used for the support of the head. A douche-pan is, of course, indispensable. The agate pans holding 4 quarts of water are the most serviceable. The douche-pan is placed against the lower edge of the under pillow, which is protected by a bath-towel. The woman must throw a heavy shawl or blanket over herself while taking the douche, otherwise there is great danger of becoming chilled, and thus doing actual harm instead of good. The most common and best form of syringe is the fountain-syringe. This is hung about 6 feet above the bed or floor. It should hold 4 quarts of water; this quantity of water is necessary when the douche is given, as it most commonly is, for pelvic inflammation. On beginning its use, the temperature of the water must be controlled by the sensitiveness of the patient; generally one can use a temperature of at least 112° F., but not always; sometimes one must be content with a beginning temperature as low as 104° F., gradually increasing the temperature by two degrees every few days, until from 114° to 120° F. is reached. The use of a bath thermometer is always essential to test the temperature of the water. The temperature of the douche should never go above 120° F., or actual harm will be done. On lying down, the lower part of the body rests on the broad strip of the douche-pan, the nates coming over the edge, and the clothing well pushed up, otherwise the water will seep up the back.