SHEILDS, or SHEALS, South and North, two seaport towns, one in the county of Durham, and the other in Northumberland; neither has market nor fair, but both are remarkable for being the mart where ships take in their loading of coals, and where they make large quantities of salt. They are seated on each side of the mouth of the river Tyne, 10 miles east of Newcastle, and 188 north by west of London. W. Long. 1. o. N. Lat. 55. o.