The burning of anthracite coal requires appliances quite Afferent from those used for the burning of wood, or bitumin-)us coal, but the reasons for these differences, are not well un-lerstood by the mass of people who use anthracite, and as we lre constantly receiving inquiries suggested by imperfections n the construction of stoves, furnaces, and heaters, we deem t timely to give some hints on this subject. In doing this we shall necessarily be obliged to repeat in lubstance much that we have said informer seasons upon the lame and kindred subjects, but the importance and practical lature of the topic must be our excuse. The temperatures at which different kinds of fuel ignite,vary greatly, and as anthracite is the most difiicult to kindle of all he fuels in use in this country, novices in its use often find ;rouble in lighting it. * This can only be done by the use of 5ome more easily kindled fuel, wood or charcoal being gener-illy employed for the purpose. Anthracite coal being a much nore dense material than the other fuels named, requires a concentrated and powerful heat to raise it to the cemperature it which it will commence to combine with the oxygen of the dr. A common fault with those unaccustomed to it, is to use ;oo coarse wood for kindling, and too much of it. This, while t generally succeeds in lighting the coal, leaves a bed of ishes below the coal which interferes with the draft unless aked out; an operation which always retards the combustion )f partially ignited coal. The wood should be of some rapidly burning variety which ives a quick and high heat, and should be split fine. It should be so placed that the coal will remain on the top of it md not fall through to the grate, leaving the kindling on the ;op of any part of the coal. The amount of kindling wood re-luired depends much upon the size of the coal. A common mistake is to use too large sized coal. A good rule, where stoves or furnaces have a good draft, is to use coal as small IS can be used without inconvenience from its sifting too freely through the grate. Grates should have their bars closely set for stoves that are cleaned out daily, and have fires lighted in them each morning, while those which are intended to have fire kept in them continuously for days or weeks will not admit of fine grates, on account of the accumulation of ashes and small " clinkers." There is much difference in coal in regard to the formation of clinkers. These are nothing but vitrified, or partially vit- i rified earthy matters, and only can form when a high heat is maintained; they are apt to be troublesome whenthere is too \ great draft. A coal stove or furnace should therefore be so | constructed that its draft can be perfectly controlled. The : bottom draft should admit of being closed air tight, as nearly | as is possible to make it, and there ought always to be provision made for a top draft. If, however, the draft of a chimney should be so strong, that air in too great quantities is drawn in at the bottom when the dampers are closed, a damper in the pipe which will close it partially must be employed, though in sluggish chimneys such a damper 4s apt to force the gases of combustion into the room, and therefore it ought always to be avoided when possible. The practice of putting ashes on the top of a fire to keep it, is very productive of clinkers, although it answers the purpose very well in other respects. Damp coal screenings are better, and may be economically burned in this manner. If a coal fire gets very low, the quickest way to extinguish it, is to rake it at the bottom. To preserve a fire under such circumstances, a little coal should be placed on the fire, and when it has caught mere may be added, and the raking deferred until it has got well ignited. When the fire bricks have become burdened with clinkers which have fused and adhered, they may be cleaned by throwing oyster or clam shells into the fire box when the fire is very hot, and allowing the fire to go out. The clinkers will generally cleave off without the use of much force the next morning. From two quarts to one-half a peck, will be sufficient for most stoves, and the operation can be repeated if some of the clinkers still adhere. In a subsequent article we shall say something on the proper regulation and adjustment of apparatus for warming buildings by hot air
This article was originally published with the title "Hints on the Burning of Anthracite Coal"