BAKING SODA AS A MEDICINE.Baking soda, which is known to physicians and dnuggists as sodium bicarbonate, is extolled by Dr. W. P. Herrick, of New York, in the β’'Medical Journal, as probably the most generally useful of all drugs used as medicines. This not merely because of its value when used alone, but because of the great number of important combinations into which it enters. its effect seeming to be to increase the efficiency of the drugs with which it is*combined.Dr. Herrick describes the multifarious uses of bicarbonate of soda. These may be summarised as follows:βIt is a valuable skin lotion, relieving itching, allaying the pain of burns.It is a non-irritant antiseptic for wounds.In warm water It is the best method of removing hardened wax from the ear.As a nasal douche it is unsurpassed.As a mouth wash it is antiseptic and alkaline; it cures canker sores.It makes a grateful gargle in lon-silitis and diphtheria.As a douche tor the stomach and other parts it is most valuable.In the stomach it dissolves mucous and neutralises acids, and ranks tirst among stomachicsIt is good for the hyperacidity of rheumatic conditions, tlatulenc.v. gastric ulcer, diarrhoea, and increases the alkalinity of nc blood.As an adjuvant -which means an Addition to any drug in order to increase its effect -the most \aluable of all is bicarbonate of soda.