MAINE, the twenty-third State, was admitted to the Union March 15, 1820. (See p. 60.) MISSOURI, the twenty-fourth State, was admitted to the Union August 10, 1821. Its name is derived from its principal river, and means "Muddy water." Its oldest town, St. Genevieve, was founded in 1755. St. Louis was settled nine years after, but was not incorporated as a town until 1809; its first newspaper was published in 1808, and the first steamboat arrived at its wharf in 1817. The District of Louisiana was organized as Louisiana Territory in 1805, with St. Louis as its capital. When Louisiana became a State, the name of the Territory was changed to Missouri. ARKANSAS, the twenty-fifth State, was admitted to the Union June 15, 1836. It took its name from a now extinct tribe of Indians. It was discovered and settled by the French under Chevalier de Tonty, as early as 1685. It followed the fate of the other portions of Louisiana. On the admission of the State of Missouri, Arkansas was organized as a Territory, including the present State and a part of Indian Territory. MICHIGAN, the twenty-sixth State, was admitted to the Union January 26, 1837. The name is of Indian origin, signifying "Great Lake." It was early visited by missionaries (see p. 33) and fur traders. Detroit was founded in 1701 by Cadillac. This region, first a part of the Northwestern Territory, then of Indiana Territory, was organized as a separate Territory in 1805. The country north of the present States of Indiana and Illinois was annexed to Michigan in 1818. The act of admission gave the State its present boundaries. FLORIDA, the twenty-seventh State, was admitted to the Union March 3, 1845. The Spanish word _florida_, means "blooming" (see p. 27). Its early visitors, Ponce de Leon, De Narvaez, and De Soto, its first settlement at St. Augustine, its history under the Spaniards, and the Seminole war, have been incidentally described. It was organized as a Territory March 3, 1819.