Asaphus. See TRILOBITE.
Åsar is the Swedish name given to long winding banks and ridges of gravel and sand, which occur abundantly in the low grounds of Sweden. They often run continuously for more than 100 miles—sometimes one dominant ridge being joined by many tributary ridges, just as a river by its affluents. They are believed to have been formed underneath the great mer de glace which covered Sweden during the Glacial Period (q.v.), and to mark the site of sub-glacial streams and rivers. Similar gravelly ridges occur in Ireland, where they are called csker, and in Scotland, where they are called kames—a name which has been applied to similar gravelly accumulations which occur over vast regions in the northern states of the American union.