FUEL. Coals constitute a principal article of domestic convenience, especially during the severity of winter. At that season they often become very scarce, and are sold at an extravagant price. To remedy this evil in some measure, take two-thirds of soft clay, free from stones, and work it into three or four bushels of small coals previously sifted: form this composition into balls or cakes, about three or four inches thick, and let them be thoroughly dried. When the fire burns clear, place four or five of these cakes in the front of the grate, where they will soon become red, and yield a clear and strong heat till they are totally consumed. The expense of a ton of this composition is but trifling, when compared with that of a chaldron of coals, as it may be prepared at one-fourth of the cost, and will be of greater service than a chaldron and a half of the latter. Coal dust worked up with horse dung, cow dung, saw dust, tanner's waste, or any other combustible matter that is not too expensive, will also be found a saving in the article of fuel. Nearly a third of the coals consumed in large towns and cities might be saved, if the coal ashes were preserved, instead of being thrown into the dust bins, and afterwards mixed with an equal quantity of small coal, moistened with water. This mixture thrown behind the fire, with a few round coals in front, would save the trouble of sifting the ashes, and make a cheerful and pleasant fire.----THE BEST MODE OF LIGHTING A FIRE.--Fill the grate with fresh coals quite up to the upper bar but one; then lay on the wood in the usual manner, rather collected in a mass than scattered. Over the wood place the cinders of the preceding day, piled up as high as the grate will admit, and placed loosely in rather large fragments, in order that the draft may be free: a bit or two of fresh coal may be added to the cinders when once they are lighted, but no small coal must be thrown on at first. When all is prepared, light the wood, when the cinders in a short time being thoroughly ignited, the gas rising from the coals below, which will now be affected by the heat, will take fire as it passes through them, leaving a very small portion of smoke to go up the chimney. One of the advantages of this mode of lighting a fire is, that small coal is better suited to the purpose than large, except a few pieces in front to keep the small from falling out of the grate. A fire lighted in this way will burn all day, without any thing being done to it. When apparently quite out, on being stirred, you have in a few minutes a glowing fire. When the upper part begins to cake, it must be stirred, but the lower must not be touched.