This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1856 Excerpt: ...brief definitions of a few prominent varieties and processes may interest those to whom the subject is entirely new.--First: " Laticinio," or filigree glass, of which there is a great diversity of patterns, is characterized by coloured threads (generally opaque milk-white, hence the word " Laticinio"), included in the mass of transparent glass, which, by various methods of manipulation, are twisted or woven as it were, into regular spiral or reticulated patterns, producing in some specimens a kind of network of delicate lines spread over the piece, (" vitro di trina," or lacework glass); this latter term, however, is generally applied to specimens in which the white threads are crossed at an angle, forming lozenge-shaped compartments, each of which sometimes contains a small air-bubble. "Millefiore" glass has a rich variegated appearance, exhibiting an infinity of eccentric patterns, stars, circles, &c., produced by mingling small cylindrical pieces of various coloured filigree glass, cut from thin rods, with the melted mass from which the vessels are blown. "Schmelze," and Schmelze-Avanturine; the former of these varieties is a semi-opaque glass of a rich variegated brown, green, or bluish colour, which when seen through by transmitted light takes a deep blood-red tint. Patches or globules of gold, sometimes seen on the surface of this kind of glass, constitute the schmelze-avanturine. The " Avanturine" is obtained by mingling metallic filings or levigated leaf-gold with melted glass, in the mass of which it is seen suspended in the shape of brilliant particles. Nos. 167 to 184. OMPRISE a series of eighteen Tazze of various designs, all enriched with enamel colours and gilding. The general sim...