Rockets, [609]

Rockingham Glazes, [171]

Rodinal Developer, [524]

Roller Compositions for Printers, [617]

Roman Candles, [609]

Roof Paints, [497]

Roofs, How to Lay, [397]

— Prevention of Leakage, [397]

Room Deodorizer, [400]

Rope Lubricants, [463]