536 D. MILNE HOME ON HIGH-WATER MARKS ON THE 
lacustrine. It was near this last spot that a spear of flint was found, pro- 
bably used in primitive times for the spearing of salmon. 
If these suggestions are correct, there must have been some blockage near 
Coldstream Bridge. The banks there are high, and approach so near each 
other, that there is no physical improbability against the lake theory. 
B. There is still another line of cliffs and flats in the district, which 
deserve notice. They are at a level of from 170 to 185 feet above the 
sea. | 
Beginning as before on the south side of the valley and near the sea, this 
system appears at the following places, as shown on the Map (Plate XX XV.) by 
this line —+—+—-+ having on it the same letters as in the text :-— 
(a.) Sunnyside Hill and East Ord, where there is a steepish bank facing 
the north, having a base line running north-west and south-east, at a level of 
about 170 feet above the sea. 
(6.) Middle Ord, a similar bank, running in the same direction. 
(c.) Between Loanend and Longridge, a bank facing the north, and trace- 
able nearly to Horncliff village. 
(d.) Thornton school and cottage, a round grass knoll, the base of which 
is about 170 feet above sea. 
(e.) Shoreswood Rocks, facing north-west, the base of which is about 170 
feet above sea. 
(7) Old Heiton and Tiptoe, on River Till, where there is flat land, 180 feet 
above the sea, bounded by a bank. 
(g.) Palinsburn. The base of the long ridge or kaim in front of house is 
185 feet above sea; an extensive expanse of flat land to the west, bounded by 
asteep bank, is about the same level. 
(h.) At Melkington Hill—another small hill to east—and Cramond Hill, 
there are steep banks facing north and west, 180 feet above sea. 
(4.) Hill plantation, north of Cornhill, base of which is 180 feet, above 
the sea,—steep towards west and north. 
(l.) Between Carham Railway Station and Kelso Railway Station, a steep 
bank, traceable south of and nearly parallel with the railway, at about 180 feet 
above the sea. On Kerchesters Farm, the cliff is from 40 to 50 feet high, and 
very steep towards the north. 
(m.) Windywalls Farm, south of Millenden, a similar bank. 
(n.) At Springwood Park, Old Roxburghe Castle, and Floors, the line a 
about 180 feet crosses the valley, as shown partly by the extent of flat land at 
these places, but more so by the banks bounding the flat land. 
At Floors, the flat is that on which the modern castle stands, bounded by a 
bank about 180 feet above the sea, fronting south-east. (See page 523.) 
(0.) The same flat is traceable near Kelso Race-Course, and also to the 

