Mechanical tools are, the.

London, 1851. — 498 Rogers, James Edwin Thor old (1823- 1890) 630,634,676,701 Rogier, Charles (1800-1885) — 263 Roscher, Wilhelm (1817-1894)— 377. Roscoe, Henry Enfield, Sir (1833- 1915)— 15. Russell, John, Lord (1792-1878) — 416 D Daire, Louis Francois Eugene (1798.