one of the principal rivers of Scotland, forming in the lower part of its course the boundary between England and Scotland, takes its rise at the south-western extremity of Peeblesshire, in the upper part of the parish of Tweedsmuir, about 6 miles north of Moffat. During the upper part of its course it is augmented by numerous small streams, and flows in a north-easterly direction, till it receives the Lyne, about 3 miles above Peebles, whence its general course is eastward to its mouth. A short way farther down it receives the Manor, and at Peebles the Eddleston, being now a considerable stream; and though only 30 miles from its source, having fallen 1000 feet, two-thirds of its entire descent. Its next considerable affluents are the Quair and Leithen, and it afterwards receives the united waters of the Yarrow and Ettrick. After passing Abbotsford it receives the Gala, and the Leader at a short distance below Melrose Abbey. Passing Dryburgh Abbey, where are deposited the remains of Sir Walter Scott, the Teviot is the only large stream that it receives till past Kelso. Four miles below Kelso it receives the Eden, at Coldstream the Leet, and 3 miles below Coldstream the sluggish Till from Northumberland. The only other considerable stream that it receives, till it falls into the German Ocean at Berwick, is the Whitadder. The Tweed is 96 miles in length, and is estimated to drain an area of 1870 square miles. It is chiefly famous for the beautiful rural scenery through which it flows, and for the important place which it occupies in Scottish song and story. Its traffic is chiefly confined to Berwick. The tide rises to Norham Castle, 10 miles from the sea, but the river is only navigable for boats of 50 tons for the last six miles. The salmon fisheries of the Tweed are of considerable value, though not now so important as formerly.