Lisle, Lewis De

, brother of the preceding, and an astronomer, promoted the interests of science, by some very hazardous journeys and voyages. In 1726 he went to Russia with his brother Joseph, who had been appointed astronomer to the academy of sciences at Petersburg. Lewis, at this time, made excursions beyond the utmost boundaries of the immense Russian empire. He took several journeys to the coasts of the Icy sea, to Lapland, and the government of Archangel, to determine the situation of the principal places by astronomical observations. He afterwards traversed a great part of Siberia, with M. Muller and M. Gmelin, professors of the academy at Petersburg. In 1741 he proceeded alone to Kamtschatka, and thence to Cape Beering, to examine the unknown northern coasts of America, and the seas between them and the Atlantic continent. He died in the same year. On account of his great merit he obtained a seat in the academy of sciences, and was the author of some papers in the “Memoirs” of that learned body, and of the academy of sciences at Petersburg. 2