A material has recently been brought into the English market called “permanent wood filling,” which is confidently recommended as effecting a saving in time, expense, and labour, and at the same time more effectually closing the pores of the wood than the ordinary filling now in use. This invention is due to a Polish exile named Piotrowski, who took refuge in America, and there introduced it about 1867, since which date it has found its way into the chief carriage factories in the United States. It is applied to the bare wood, one coat being given to bodies and two coats to carriage parts. This closes the pores, holds the grain immovably in its place, and is so permanent in its effect that neither exposure to dampness, nor atmospheric changes, nor the vibrations to which a carriage is so subject can affect the grain. The satisfaction which this material appears to give to the Americans, who pride themselves on the superiority of their carriage-painting, ought to induce our English coach-builders to inquire after it; for if all that we hear of it be correct, it must assuredly be a valuable acquisition to the paint shop. In rubbing down use pumice-stone. It is best to begin on top and follow on down, so that the filling water may not run down on to any part that has been finished. Water should not stand for any length of time on the inside of the body; and when the rubbing is completed wash off clean outside and in, and dry with a chamois kept for the purpose. The body, when dry, receives a staining coat, and is to be carefully sand-papered over, the corners cleaned out, and put on a coat or two coats of dark lead colour, made of tub lead, lampblack, raw oil, and a small quantity of sugar of lead, and reduced to a proper consistency with Japan gold size and turpentine. When dry scratch over the lead colour with fine sand-paper, which will make it appear of a lighter colour; we shall then be able to detect any low or sunk places by reason of the shadow. Putty up any imperfections with putty made of lead and varnish, and when dry face down with lump pumice and water. Follow with fine sand-paper, when the surface will be in a condition to receive the colour coats. Sometimes, after cleaning off, another coat of dark lead colour is laid on. Analysing the foregoing, we find we have used— 1 priming coat of lead (or leather parts, 2 coats of black varnish instead). 2 thin coats lead colour, and stopped up. 5 coats of filling up (8 coats on leather parts). 1 staining coat, rubbed down and cleaned off. 2 coats dark red colour, stopped up, and carefully rubbed down. 1 coat dark lead colour. — 12 coats, and ready for colour.