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divides Roxburghshire from Berwickshire. After leaving Roxburghshire
the Tweed is but partly a Scottish river it divides Berwickshire
from England till within 4½ miles of the sea and then bids adieu to Scotland
& runs between England and the Liberties of Berwick. Its course for 4 or 5 miles
after leaving Roxburghshire is eastward then changes to North east by
North and again to the eastward for about 5 miles to its embouchure into
the German Ocean. The Tweed directly or by its tributaries draws nearly
the whole area of the central and eastern Border counties of Scotland and of the detached
districts of Durham and the north corner of Northumberland in England. It usually
ranks in importance as the fourth of Scottish rivers, the Tay the Forth & the Clyde being respectively
pronounced the first second & third. But estimates according to the extent of country which it drains it far surpasses
every Scottish river except the Tay for while the Spey which this rule places next to it drains only 1300 square
miles and the Clyde which is next to the Spey drains only 1200 the Tweed drains 1870. The Scottish counties
with which it has connection are Peebles Selkirk Roxburgh Berwick and the southern division
of Edinburgh and excepting a tiny part of Peebles drained by the headwaters of the Mid Lothian
Esks, the parish of Castletown and some very small pendicles of Roxburghshire
and the northeast division or about a fourth of Berwickshire these counties
are entirely within its basin