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es to hold the grass-seed and allow certain small weed-seeds and dust to pass. Grate. 1. A grated box or basket, or a box with a series of bars for a floor, in which fuel is burned. The oldest form of grate may have been a row of bars laid upon bearers or stones so as to admit air beneath the fuel in the intervals of the bars. A cresset or fire-cage is also an old form of grate. See cresset. In an inventory, dated 1606, of the goods of Sir Thomas Kytson, at Hengrave Hall, Suffolk, England, mention is made of a cradell of iron for the chimnye to burn sea-coal with, and also j fier sholve made like a grate to seft the sea-coal with. The cradell was probably a standing basket-grate. This is an early mention of the use of sea-coal, but the basket form was common in cressets. James Watt, in 1785, patented an arrangement for consuming the smoke in furnaces, by supplying the fire from above downward by means of a reservoir of fuel in contact with the ignited mass, the fue