Excerpt from Metals, Their Properties and Treatment The following treatise has been written for the Series of Text-Books of Science published by Messrs. Long-mans and Co., and intended for the use of Artisans and Students in Public and other Schools. Its subject, Metallurgy, one of the most ancient of the Arts, and closely connected with the progress of civilization, has attained to enormous proportions. The processes followed in the treatment of any particular metal, or of its ores, are varied according to local circumstances and traditions; a few only, of modern origin, having been devised upon scientific principles. To describe these processes, with all their modifications, would require several large volumes. The Author, consulting the interests of those persons for whom the Text-Books are designed, has endeavoured to give such a description of the mode of dealing with the useful metals as shall enable the Chemical principles involved to be clearly understood, and...