Dissolve, in cold water, as much pearlash as it is capable of holding in solution, and wash or daub with it all the boards, wainscoting, timber, etc. Then diluting the same liquid with a little water, add to it Such a portion of fine yellow clays will make the mixture the same consistence as common paint; stir in a small quantity of paperhang-er's flour paste to combine both the other substances. Give three coats of this mixture. When dry, apply the following mixture:- Put into a pot equal quantities of finely pulverized iron filings, brick dust, and ashes: pour over them size or glue water; set the whole near a fire, and when warm stir them well together. With this liquid composition, or size, give the wood one coat; and on its getting dry, give it a second coat. It resists fire for five hours, and prevents the wood from ever bursting into flames. It resists the ravages of fire, so as only to be reduced to coal or embers, without spreading the conflagration by additional flames; by which live clear hours are gained in removing valuable effects to a place of safety, as well as rescuing the lives of all the family from danger! Furniture, chairs, tallies, &C, particularly staircases, may be so protected. Twenty pounds of finely sifted yellow clay, a pound and a half of flour for making the paste, and one pound of pearlash, arc sufficient to prepare a square rood of deal-boards.