546 D. MILNE HOME ON HIGH-WATER MARKS ON THE 
The interstices between the fragments are filled with sand. Amongst the sand, 
there is a well-rounded whinstone boulder, which could have come from no 
other quarter than the west. 
Near the Chain Bridge across the Tweed above Paxton House, there is a 
bed of sand, covered by confused gravel. Partly buried in the sand, there is a 
sandstone block of angular shape, which probably came from the west, as rocks 
of that character are chiefly in that direction. 
(2.) Of the next class of boulders, being of rocks differing from those in 
the valley, and occurring in hills adjoining, there are Silurian, Greenstone, 
dark Basalt, buff compact Felstones, various Porphyries, a black hard metamor- 
phosed Graywacke rock, and red and gray Granites. 
The ordinary graywacke, the greenstone, and the basalt, may have come 
from any of multitudes of places situated to the north or the west. On 
Kerchesters Farm, in the Redden Burn, there are several whinstone houlders 
at a height of 330 feet above the sea, sticking in boulder clay. The direction 
of the longer axis of most of these boulders, is E. 45. One of them has strie 
on the upper surface bearing E. 4 S. At Marchmont, 539 feet above sea, 
there is a magnificent blue whinstone boulder, 9} x 5 x 4 feet, with strize 
on it, parallel with the longer axis. In all the above cases, the only known 
rocks of whinstone 2 sit are situated to the westward of the boulders. 
There are other blocks which must have come from one or two hills, 
whose position is known, such as the buff felspar of Dirrington Law, the 
porphyry of Kyles Hill, the granites of Cockburn Law, and the black metamor- 
phosed graywacke from a place near Cockburn Law. All these hills are to 
the west of the blocks. 
The Cockburn Law blocks occupy a fan-shaped track towards the S.E. 
The north side reaches to the sea coast at or near Eyemouth, and the south 
side crosses the Tweed at or near Ladykirk. Two kinds of rock, occurring 
in Cockburn Law, are found along this track, viz., Granites, grey and flesh 
coloured ; and a black Silurian rock with singular looking iron nodules in it. 
In this track the size and number of the blocks, is greater in proportion to 
their nearness to Cockburn Law. 
Reference has been made to a block of blue whinstone, 12} tons in weight, 
found in Paxton Brickwork. The nearest rock of the same kind is at the 
Hardens, 2 miles west from Dunse, and bearing from Paxton about W.N.W. 
(magnetic.) Its longer axis, and sharpest point, were towards that quarter.* 
There are boulders from the Cheviot Hills, deserving of notice. Thus, 
to the S.E. of Wooler, in Northumberland, and about 3 miles distant, 
there is a hill (Fowberry Moor) which (according to the Ordnance Suryey) is 
* Tn the channel of the River Tweed, at Carham, I observed a number of boulde 
Those which were of an oblong shape, lay ‘with their points up stream. in he 

