The manufacture of iron, in all its various branches : including a description of wood-cutting, coal digging, and the burning of charcoal and coke ; the digging and roasting of iron ore, the building and management of blast furnaces, working by charcoal, coke, or anthracite ; the refining of iron, and the conversion of the crude into wrought iron by charcoal forges and puddling furnaces : also a description of forge hammers, rolling mills, blast machines, hot blast, etc. etc. : to which is added an essay on the manufacture of steel