TO PREVENT INFECTION.

Mix in a plate, a few ounces of pulverized black oxyde of manganese

and common salt, which being placed in the house supposed to be

infected, sprinkle oil of vitriol upon the mixture, and gas will

arise which will render the place perfectly salubrious. The oil of

vitriol should be carefully added by a few drops at a time, the face

being turned from the mixture.