Antiseptic Cotton

First free the ordinary cotton wool from grease, by macerating it in benzine for ten minutes, press and dry in the air. Then steep the purified cotton, for ten minutes, in a solution of tannin 5, carbolic acid 4, alcohol 50, and castor oil 8 parts.

Styptic Cotton-Wool

Purify, as before, with benzine, dry in air, and then steep it in a solution of alum 2, water 12, chloride of iron solution 2 parts; dry at 6o° C.