—, light acting on an iodized plate, producing, xlvii, 190.
—, machinery producing, A. Smith, xxxix, 134.
—, medical, J. Hall, iii, 166.
—, motion producing and motion produced by, J. Locke, xxxiv, 130.
—, needle deflected by, xii, 199.
—, of peroxide of manganese, xxx, 179.
—, ponderable substances transferred by, A. Fusinieri, xxii, 355.
—, principles of, in 1833, A. de la Rive, xxvi, 175.
— produced by the action of light on an iodized silver plate, xlvii, 190.
— — by machinery, A. Smith, xxxix, 134.