The magnitude 4.5 earthquake that hit southwest of Chicago at 1:11 a.m. Monday was along the Sandwich Fault Zone and evidently had nothing to do with the New Madrid Fault, along which an earthquake occurred in 1812 that changed the course of the Mississippi River, rang church bells in Boston and knocked herds of bison off their feet in the Plains, and along which there have been 44 minor earthquakes with New Madrid, Mo., as the epicenter in the past six months.