ANN ARBOR  , a city and the county-seat of Washtenaw county, Michigan, U.S.A., on the Huron river, about 38 M . W. of Detroit . Pop . (189o) 9431; (1900) 14,509, of whom 2329 were foreign-born; (1910) 14,817 . It is served by the Michigan Central and the Ann Arbor railways, and by an electric line running from Detroit to Jackson and connecting with various other lines . Ann Arbor is best known as the seat of the university of Michigan, opened in 1837 . The city has many attractive residences, and the residential districts, especially in the east and south-east parts of the city, command picturesque views of the Huron valley . Ann Arbor is situated in a productive agricultural and fruit-growing region . The river provides good water-power, and among the manufactures are agricultural implements, carriages, furniture (including sectional book-cases), pianos and organs, pottery and flour . In 1824 Ann Arbor was settled, laid out as a town, chosen for the county-seat, and named in honour of Mrs Ann Allen and Mrs Ann Rumsey, the wives of two of the founders . It was incorporated as a village in 1833, and was first chartered as a city in 1851 .