Princeton, N. J., May 16--John Grier Hibben, president of Princeton from 1912 to 1932, was killed in an automobile accident at 4.30 o'clock this afternoon near Woodbridge, New Jersey, while driving with his wife. Ex-president Hibben died en route to the Rahway General Hospital, where Mrs. Hibben is in a serious condition. The car which was being driven by Hibben, swerved into the path of westbound traffic, colliding with a truck of the Middlesex Beverage Company driven by Peter Seilia. Seilia is being held for manslaughter.