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Ledoyen's Solution

This is a solution of nitrate of lead, and contains about 20 ounces of the salt in a gallon. The specific gravity should be 1.40. A similar compound may be made by mixing 134 ounces litharge with 6 pints water, and adding 12 ounces nitric acid at 1.38 specific gravity (or 8 ounces at 1.50) and digesting at a gentle heat till the solution is complete. 1698. Carbolic Acid as a Disinfectant. The French commission (see No. 1697) also reported that carbolic acid is much more easily applied, is less dangerous and expensive than hyponitrous acid, and seems to offer guarantees of quite equal efficacy, founded on experimental evidence. It is best employed by mixing with sand or sawdust in the proportion of 1 part by weight of acid, 1704. Chloride of Lime as a Disinand 3 parts of the inert material. The mix- fectant. It is a great purifier. 1 pound ture is placed in earthen pots. Carbolic acid, requires 3 gallons of water; use the clear diluted with 25 to 30 times its weight of solution. To purify rooms, sprinkle on the water, has been found useful in sprinkling floor, and, if needful, on the bed-linen. Indaily the floors and the bedding of sick cham- fected clothes should be dipped in it and bers. It has been stated by M. Devergie, that water containing only the 4000 part of its weight of carbolic acid sufficed for the disinfection of a dead-house during the hottest weather, when it contained from 6 to 7 bodies.