Potassa. M. Leconte prepares this solution in the following manner: Caustic potassa, 6 drachms; chlorate of potassa, 5 drachms; binoxide of manganese, 5 drachms. Dissolve the caustic potassa and the chlorate in a small quantity of water, and add the manganese; get rid of the water by evaporation, stirring constantly, and calcine the dry mass to a dark red for an hour in an untinned iron cup; allow to cool, and add a quart of plain water. Then boil for 5 minutes in a china capsule, and you will obtain a fluid of a slightly purplish tint; decant tho solution, and wash the residue with such a quantity of water as to make altogether 2 quarts. When filtering is thought necessary, the liquid should be passed, not through paper, but through very fine sand. For dressing foul wounds, or for injection, use 1 drachm of this solution to from 3 drachms to 5 of spring water.

4797. Reveil's Solution of Permanganate of Potassa

4797.    Reveil's Solution of Permanganate of Potassa. The officinal solution of tho British pharmacopoeia consists of 80 grains of the permanganate dissolved in 1 imperial pint distilled water. This is about 1 part by weight to 110 parts water. M. Reveil recommends a standard solution of 10 parts permanganate to 90 of water, so that tho so-lution contains 10 per cent, of permanganate. This latter strength is endorsed by tho U. S. Dispensatory, which also recommends extreme cleanliness in its preparation and use, and of the bottles containing it, as organic matter more or less neutralizes its disinfecting and cleansing powers. Tho same authority orders tho pencil or brush used for its application to be made of amianthus, or asbestos, in order to ensure its fullest effects. (See No. 1701 (Condy's Solution).)

4798. Directions for Using Permanganate of Potassa

4798.    Directions for Using Permanganate of Potassa. Reveil's standard solution (see No. 4797 (Reveil's Solution of Permanganate of Potassa)) may bo used at its full strength for dressing cancerous sores and ulcers, applied with a pencil made of asbestos, or sprinkled over a dressing of tho same material. For simple wounds or for injections, 1/2 fluid ounce of tho solution may bo diluted with 1 pint of water. For gangrenous wounds and scrofulous ulcers, or as a gargle in unhealthy ulcers of tho mouth and throat, 1 fluid ounce to a pint of water. For a gargle in croup and diphtheria, or as a wash for the hands after dissecting, 2 fluid ounces to tho pint. A dose administered internally may consist of 10 to 30 drops of tho standard solution. (U.S.Disp.)

4799. Aceto-Carbolic Solution

4799.    Aceto-Carbolic Solution. Acetic acid (pyroligneous) 8°, 20 parts; pure carbolic acid, 5 parts ; water, 75 parts. Mix the two acids and add the water. Tho acetic acid favors penetration through tho epidermis. For tinea, apply the liquid once a day over the diseased parts by means of a brush. For scabies, sponge all tho parts. Tho clothes, etc., of tho affected individual should also be treated with tho liquid. (Lcmaire.)