File:Castilian furnace.png

English: Within the last few years a blast furnace has been introduced into the lead works of this country, which possesses great advantages over every other description of apparatus which has been hitherto employed for the treatment of lead ores of low produce. This apparatus, although first employed in Spain, was invented by an Englishman (Mr. W. Goundry) who was employed in the reduction of rich slags in the neighborhood of Carthagena. These figures represent respectively a vertical section, an elevation, a grouml plan, and a horizontal section of a Castilian furnace. The section {fig. 377) is on the line x y, {fig. 375.) a is the body of the furnace, b, the bottom composed of a mixture of coke-dust and fire-clay; c c c, the tuyeres; d, the rectangular covering of masonry ; E E E E, cast-iron pillars , F, the breast-pan ; g, slot for tapping hole ; n, lip of breast-pan ; i, feeding door; k, flue-hole; p, q, ground line.