CADILLAC (kcid'i-lcik), a city of Michigan, U.S.A., 95m. N. of Grand Rapids, on Lakes Cadillac and Mitchell, which are con nected by a picturesque canal 2ooyd. long; the county seat of Wexford county. It is on Federal highway 131, and is served by the Ann Arbor and the Pennsylvania railways. The population in 193o was 9,57o. It is the supply and shipping centre for a lumber ing and farming region, and has large lumber mills, woodworking factories and other industries. There is good fishing in the lakes and streams. Many unusual Indian relics are found in this region, and there are prehistoric earthworks near the city. Cadillac was settled in 1871, and in 1877 was chartered as a city under its pres ent name (after Antoine de la Mothe Cadillac). It has a com mission-manager form of government.