524 D. MILNE HOME ON HIGH-WATER MARKS ON THE 
In glancing over the foregoing table, it will be observed that there are at 
some places high banks, the base of which is not exactly at the same height 
above the river as at other places. It is not difficult to account for this. Inthe 
first place, the author not having had the assistance of a professional surveyor, 
the measurements stated may be a foot or two wrong. In the next place, 
the flood-line of a stream may not be everywhere equally high above the 
channel, because of the water having at some parts of its course risen verti- 
cally, and at others spread laterally. 
In No. 5 of the foregoing list, the section makes reference to a flat bounded 
by a sloping bank, the base of which is about 50 feet above the river, and — 
about 68 feet above the medium sea-level. This flat is very extensive. It has 
apparently extended originally to the west side of the Whitadder, and can be 
traced for nearly a mile up the right bank. In the Paxton Policy grounds (Tweed 
Braes) there is a small flat at about the same level. In that case, the flat must 
have originally formed an area of about 2 miles in a S.E. and N.W.. direction, 
and of half a mile in width. It is so extensive as to suggest rather the 
bottom of a lake or of an estuary, than of ariver. Moreover, the sloping 
banks which rise from it, are less steep than the banks produced by a river 
current. 
4. In a higher part of the Tweed—viz., at Melrose—thereis a valley with 
two well-marked water-lines on its sides. 
The following figure indicates the relative heights of these lines :— 
Section of Banks at Melrose, across the Valley in a N. and S. direction. 


Cc 
SouTH B 

146 283 439 585 R 20 60 100 
1 i L : 1 i 1 1 L 1 J Lae ee 
Hor. Scale of Yards. Vert. Scale of Feet. 
R, the Tweed. A A’, Flood-line of River. A BC, Sloping ground occupied by town up to railway. D, Eildon hills. — 
A’ B’, asteep bank, B/C’, Flat land of Gattonside and Allerly. f 
The above section is on a line drawn across the 6-inch Ordnance Map — 
between the railway station on the south side of the valley and Allerly on the 
north side. Along the south side of the valley there is an extensive flat about 
55 feet above the river, and 325 feet above the sea, occupied by the following — 
places :—viz., Priorbank, Railway Station, Darnick, Chiefs-wood, Hydropathic — 
Establishment, and Bleachfield. Along the north side of the valley, this flat, at 
the same height, is recognisable in the Pavilion grounds, Gattonside village, and 
Allerly. 
The flat is bounded by the Eildon hills on the south side of the valley, and 
by the Gattonside hills on the north. 

