in saving coal and labour, and in more comfortable uniform warmth to the room. The failures have been very few indeed. I have drawn up 7 rules for the construction of a fireplace, all of which are pronounced to be sound:-- “1. As much fire-brick, and as little iron as possible. “2. The back and sides of the fireplace should be fire-brick. “3. The back of the fireplace should lean or arch over the fire, so as to become heated by the rising flame. “4. The bottom of the fire or grating should be deep from before backwards, probably not less than 9 in. for a small room nor more than 11 in. for a large room. “5. The slits in the grating should be narrow, perhaps ¼ in. wide, for a sitting-room grate, ⅜ in. for a kitchen grate. “6. The bars in front should be narrow. “7. The chamber beneath the fire should be closed in front by a shield or economiser. “There is one caution which should be given. There is no doubt about the fact that immediately beneath the fire the hearthstone is hotter, and the ashes remain much hotter when the ‘economiser’ is used. This may increase the risk of fire whenever wooden beams lie under the fireplace. In any case of doubt, the best plan would be to take up the hearthstone and examine, and relay with safe materials; but should this be impossible, safety may be secured by covering the hearthstone with a sufficient thickness of fire-brick, just within the space enclosed by the ‘economiser’--leaving a space of 2 or more in. between the fire-brick hearth and the bottom of the fire. In lighting the fire, if there be no cinders on which to build the fire, it is well to draw away the ‘economiser’ for a short time until the fire has got hold; but, if there be cinders left from the previous day, on the top of which the paper and wood can be placed, then the fire may be lighted with the ‘economizer’ in its place. There is a great art in mending a fire. It is wasteful to throw lumps of coal higgledy-piggledy on the fire. The red embers should be first broken up so as to make a level surface, then pieces of coal should be laid flat on the fire and fitted in almost like pavement; lastly, if the fire is intended to burn slowly and last very long, small coal should be laid on the top. An ‘economised’ fire so made will, in a short time, heat the coal through, and give off gases, which will ignite and burn brightly on the surface of the black mass, and when the gases are burnt off there is a large surface of red-hot coke.” [Illustration: 30. Kitchen Economiser. 31. Bedroom Economiser.]