Alexander Gordon Laing, a British traveller, born in Edinburgh, Dec. 27, 1794, murdered near Timbuctoo, Africa, in September, 1826. He was educated for a schoolmaster, but joined the army, went to the West Indies in 1811, and served there several years in various positions, a part of the time with his uncle, afterward Lieut. Gen. Gordon. In 1820 he went to Sierra Leone, and became aide-de-camp to the governor, Sir Charles McCarthy. He took an active part in the efforts made by the English government to stop the slave trade, opened negotiations with the king of the Foolahs at Tim-bo, the capital of Foota Jallon, and contributed much to the knowledge of that country and of the upper course of the Niger. The war with the Ashantees, in which Governor McCarthy lost his life, compelled him to return to Sierra Leone. On returning to England he was made major, and placed at the head of an African exploring expedition. He sailed for Tripoli in 1825, and on July 26, 1826, joined a caravan for Timbuctoo, which he reached on Aug. 18. He left there on Sept. 22 for Sego, where he expected to arrive in 15 days, but was killed on the journey by the Arabs of the country, acting under instructions, it was afterward discovered, of the son of the prime minister of the bashaw of Tripoli. He published an account of his first journey under the title of " Travels through the Timannee, Kooranko, and Soolima Countries, to the Sources of the Rokelle and Niger, in the year 1822 " (8vo, London, 1825).