TO PURIFY WATER BY CHARCOAL.

Nothing has been found so effectual for preserving water sweet as

charring the insides of the casks well before they are filled.

When the water becomes impure and offensive, from ignorance of the

preservative effect produced on it by charring the casks previous to

their being filled, it may be rendered perfectly sweet by putting a

little fresh charcoal in powder into the cask, or by filtering it

through fresh burnt and coarsely pulverized charcoal.