To the north-west of this burn and beautiful dean are
situated the coal, lime-stone, marl, and sand-stone strata; they are
found stretching away along the shore in a very horizontal direction
for some time, but become more and more inclined as they approach the
schistus of which the hills of Lammermuir to the south are composed.
Though the boundary between the two things here in question be easily
perceivable from the nature of the country at the first inspection, by
the rising of the hills, yet this does not lead one precisely to the
junction; and in the extensive common boundary of those two things, the
junction itself is only to be perceived in few places, where the rock is
washed bare by the rivers or the sea, and where this junction is exposed
naked to our view. The sea is here wearing away the coast; and the bank,
about 200 feet high, is gradually falling down, making in some places a
steep declivity, in others a perpendicular cliff. St Abb's Head and Fast
Castle are head lands projecting into the sea, and are the bulwarks of
this shore, which is embayed to the westward, where the sea preys upon
the horizontal strata.
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