Blue Sark or blue shirt) of the old Norsemen, their first landmark on their way from Iceland to the ester Bygd, the present Julianehaab district, on the south-west coast of Greenland.
It is separated from England by the Solway Firth, the Sark, Scotsdyke (an old embankment in 55°3' N., connecting the Sark with the Esk), the Esk (for one mile), the Liddel, the Kershope, the Cheviot Hills, the Tweed and a small area known as the " liberties " of Berwick.
BERSERKER (from the "Sark" or shirt of the "bear," or other animal-skins worn by them), in Scandinavian mythology, the name of the twelve sons of the hero Berserk, grandson of the eight-handed Starkadder and Alfhilde.
The short land-frontier of England with Scotland (its length is only loo m.) is in great measure a physical boundary, as considerable lengths of it are formed on the east side by the river Tweed, and on the west by Kershope Burn, Liddel Water, and the river Sark; while for the rest it follows pretty closely the summit of the Cheviot Hills, whose highest point is the Cheviot (2676 ft.).
It cuts across country due west to the Sark, which it follows to the river's mouth at the head of the Solway Firth.
At the extreme west between the Sark and Esk as far up the latter as its junction with the Liddel, there was a strip of country, a "No man's land," for generations the haunt of outlaws and brigands.