_Verre de fougère_, in France, 134-135, 136 _Verrerie_, term explained, 1 _Verroterie_, term explained, 1, 19 Verzelini, Jacopo, 307-308 _Vetro di trina_ from Nineveh, 40 _Vetro di trina_ from Canosa, 46, 50 _note_ _Vetro di trina_ of Murano, 205-206 Vienna, Saracenic enamelled glass in cathedral, 164-165 Vienna, _Schatzkammer_, glass from, in Museum, 280 Waddesdon collection, glass in, 163, 193, 206, 252 _note_ Walloon Church at Southampton, 304-305 Warmbrunn in Silesia, glass engraving, 285-286 Waterford, glass-houses at, 336 Webb of Stourbridge, his cameo glass, 358 Weights for coins in glass, 146-147 Westminster _retabulum_, inlay of glass, 141 _Willkomm humpen_, 266 Windows of French churches, composition and colours, 132-133 Wine, when first bottled, 322 Wine-bottles, early English, 322 Wine-bottles, stamps on, 322 Wine-glasses, _see_ Drinking-glasses. Winter, Friedrich, Silesian glass engraver, 285 Wolf, engraver by _stip_ process, 297-298 ‘Würzburg’ flask in British Museum, enamels on, 153 Yard, a form of drinking-glass, 331 Yellow from antimony in primitive glass, 29 Yellow, source of, in mediæval window-glass, 133 Zozimus, treatise on alchemy, 120 _Zunft-becher_ or guild glasses, 270 _Zwischen gläser_, 274-275 Printed by T. and A. CONSTABLE, Printers to His Majesty at the Edinburgh University Press ----- Footnote 1: It would be quite beside the mark to search for a chemical formula to express such a combination of silica, soda, and lime. I have little doubt that one of the causes of this remarkable uniformity of composition is to be looked for in the very fact that such a mixture is _not a definite silicate_, and is therefore the less likely to assume a stony or crystalline structure on cooling. Footnote 2: The alumina here is probably not to be regarded as a base, but rather as taking the place of the silica. Hence the exceptionally low percentage of the latter. Footnote 3: It had its origin in great measure in the arbitrary regulations laid down by the fiscal authorities at the beginning of the last century. This side of the subject is well treated in the article on glass in the original edition of the _Penny Cyclopædia_. Footnote 4: In the Museum at Kew may be seen specimens of Spanish barilla made from the _Halogeton sativa_, as well as large crude cakes of roquetta from Aden and Bagdad prepared from the _Suæda fruticosa_ and the _Salsola kali_ respectively. Footnote 5: ‘The Processes of Decay in Glass’ is the subject of an elaborate paper by Mr. James Fowler, to be found in the forty-sixth volume of _Archæologia_. Footnote 6: Good instances of both these changes may be observed in the windows and chandeliers of the Galerie des Glaces at Versailles. Footnote 7: