Ruby-red, in mediæval window-glass, 133 Ruby glass of Kunckel, 289-291 Ruby glass examples of, 291 Rudolph II. patronises carving of rock-crystal, 278-279 _Rui_ or _rulli_, small window-panes, 182 _Ruimer_ or _roemer_ of Dutch, 295 Sabellico on Venetian glass, 201 _Sacro catino_ of Genoa, 98-99 Saladin brings new influence to Egypt, 171 Salviati, 214, 227 _note_ Samarkand, glass-makers transported to, 168 Samarkand, description of glass of, 339 Sandrart on engraving of glass, 279-282 ‘Sapphirus’ altar of St. David’s, 98 _note_ _Sapphirus_, term used for blue glass paste, 131 _Sapphirus_, see _Lapis lazuli_. St. Anastasia, Rome, glass bowl at, 98 St. Gobain, plate-glass of, 210, 235 St. Ildefonso, royal glass-works, 250 St. Mark’s treasury, enamelled Roman glass, 66-67 St. Mark’s treasury, _Diatretum_ glass, 71-73 St. Mark’s treasury, description of glass in, 99-102 St. Sophia, lamps and windows, 96-97 Saracenic art, revolution in twelfth century, 170-171 Saracenic art, influence of Mongol invasion, 171 Saracenic carved glass, earlier than enamelled, 144-146 Saracenic enamelled glass, where made, 149 Saracenic enamelled glass, nature of ‘metal,’ 150-151 Saracenic enamelled glass, composition of, 151 Saracenic enamelled glass, magnesia in, 151 Saracenic enamelled glass, nature of enamels, 151 Saracenic enamelled glass, use of _Lapis lazuli_, 152 Saracenic enamelled glass, use of gold in decoration, 153 Saracenic enamelled glass, motives of decoration, 154-155 Saracenic enamelled glass, ‘canting badges’ of Sultans, 155 Saracenic enamelled glass, Chinese motives in decoration, 155 Saracenic enamelled glass, signatures of artist, 155 Saracenic enamelled glass, forms of lamps, 157 Saracenic enamelled glass, wick of lamps, how fixed, 157 Saracenic enamelled glass, beakers of lamp-like form, 158-160 Saracenic enamelled glass, construction of base of beakers, 159 Saracenic enamelled glass, famous beakers, 161-164 Saracenic enamelled glass, vessels filled with holy earth, 164-165 Saracenic enamelled glass, long-necked bottles, 165-166 Saracenic enamelled glass, bowls and dishes, 166-167 Saracenic enamelled glass, mosque lamps, 167-169 Saracenic enamelled glass, decline of, 168-169 Saracenic enamelled glass, origin of art, 170 Saracenic enamelled glass, found in China, 348 Sargon, glass engraved with name of, 40 Saroldo family at Nevers, 233 Sassanian glass, 104-105 Sassanian influence in Japan, 355 Scarpaggiato making glass in Bavaria, 271 Schaper, Johann, painter on glass, 272-273 _Schmelz_ glass of the Venetians, 207-208, 218-219 Schmoranz, G., work on Saracenic glass, 150 _note_ Schuermans, Judge, 222, 241 Schurman, Anna Maria van, 295 Schwanhart family, engravers on glass, 280-283, 288 Schwinger, Hermann, engraver on glass, 283 Shantung, glass made in, 353 Sherbet-jugs of opaque white glass, 342-343 Sidon, Pre-Roman glass, 57, 59, 78 Sidon, inscription on glass from, 87