Rings (Annuli) of glass, [131]
Rock-crystal, glazed by Egyptians, [20]
Rock-crystal, carvings in, [70]
Rock-crystal, Byzantine school of carving, [103-104], [118]
Rock-crystal, carvings from Western Asia, [118]
Rock-crystal, engraved by Saracens, [145-146]
Rock-crystal, Italian engravers on, [279]
Roemer, how built up, [254-255]
Roemer, a form exceptional in England, [315]
Roemer, in pictures of Dutch school, [244]