Argand, Aim

É, a Genevese, who invented the lamp called by his name, which was first made in England in 1782. D. in England, 1803. The A. lamp has a circular wick to admit a double current of air, and has been for a long time in common use. Ar'gaum, a town of Central India, 40 m. from Ellichpoor, where Wellington (then General Wellesley), in 1803, gained a decisive victory over a Nagpoor force. Argelan'der, FRIED RICH WILHELM AUGUST, B. at Memel, 1799. He studied at Königsberg, and becoming early attracted to the science of astronomy, was employed by Be el to make observations, and in 1820 was appointed his a istant in the observatory. In 1823, he succeeded Walbeck as astronomer at Abo observatory, Finland. He commenced here a course of observations on those fixed stars po e ing a perceptible proper motion; and, ultimately, published a catalogue of not le than 560 stars of this character. For his discoveries, he received the great Demidoff prize from the academy of St. Petersburg. After his removal to the university of Bonn in 1837, A. published the " Uranometria Nova " (Berlin, 1843); and in 1846, his Astronomical Observa tions , giving the positions of 22,000 stars of the northern heavens, from 45° to 80° declination. Of late years, A. had much studied the changes of light in variable stars. D. 1875.