[ THOMPSON'S COAST PILOT, 153 DETROIT, THE " CITY OF THE STRAITS," | A port of entry, and the great commercial mart of the State, is favorably situated in north lat. 42° 20', west long. 82° 58', on a river or strait of the same name, elevated some 30 or 40 feet above its surface, being seven miles below the outlet of Lake St. Clair, and twenty above the mouth of the river, where it enters into Lake Erie. - It extends for a distance of some three miles upon the southwest bank of the river, where the stream is three-fourths of a mile in width. The principal public and private offices and wholesale stores are located on Jefferson and Woodward avenues, which cross -each other at right angles, the latter running to the water's edge. 'There may usually be seen a great number of steamboats, propellers and sail vessels of a large class, loading or unloading their rich cargoes, des- tined for the Eastern markets or for the Great West, giving an an- imated appearance to this place, which is aptly called the City of the Straits. It was incorporated in 1815, being now divided into ten wards, and governed by a mayor, recorder and board of alder- men. Detroit contains the old State house, from the dome of which a fine view is obtained of the city and vicinity; the City Hall, Masonic Hall, Firemen's Hall, Mechanics' Hall, Odd Fellows' Hall, the Young Men's Society Hall, two Market Buildings, forty Churches, ten Hotels, besides a number of taverns ; a United States Custom house and Post office, and United States Lake Survey office, a Theatre, a Museum, two Orphan Asylums, four Banks, anda Sav-- ings' Fund Institute, Water works and Gas works, four Grain eleva- tors, five Steam Grist mills, and several Steam Saw mills, besides a 20 : HAE as,