On the Connexion of the Physical Sciences

Magneto-electricity, principle suggesting, 322; machine constructed on the principle of, 325; relation of heat to, 329. Magnets, influence of, on electric light, 307; fish possessing the power of making, 311; effect of an electric stream on, 312-314; obtained by electricity, 315; power of electro, measured, 315; cylinders acting as, 316, 317; producing electrical effects, 322, 323; evolving electricity by rotation, 330; classification of substances in relation to, 332; polarity a property of, 336; effect on themselves of imparting paramagnetism, 337; experiment showing the lines of force of, 338; properties of, indestructible by subdivision, 338, 339; the earth reckoned among, 342; planets reckoned among, 346; action of an electro, on copper, 351. Maguire, Captain, his observations on magnetic storms, 345, 346. Malo, St., rising of the tide at, 98. Malus, M., discovery of polarization of light by, 195; attempts of, to polarize heat, 264. Malta, observations on Saturn’s rings made at, 66. Manchester, thunderstorm near, in 1835, 292. Mankind, distinct tribes of, 255; limited perceptions of, 267. Marcet, M., rate of increase in temperature below the earth’s surface calculated by, 230. Marco Polo, atmospheric effects observed by, in ascending mountains, 118.