Here the schistus and the sandstone strata both rise inclined at an
angle of about 45 deg.; but these primary and secondary strata were
inclined in almost opposite directions; and thus they met together like
the two sides of a _lambda_, or the rigging of a house, being a little
in disorder at the angle of their junction. From this situation of those
two different masses of strata, it is evidently impossible that either
of them could have been formed originally in that position; therefore, I
could not here learn in what state the schistus strata had been in when
those of the sand-stone, &c, had been superinduced.
Such was the state of my mind, in relation to that subject:, when at
Jedburgh upon a visit to a friend, after I had returned from Arran, and
wrote the history of that journey; I there considered myself as among
the horizontal strata which had first appeared after passing the Tweed,
and before arriving at the Tiviot. The strata there, as in Berwickshire,
which is their continuation to the east, are remarkably horizontal for
Scotland; and they consist of alternated beds of sand-stone and marl, or
argillaceous and micaceous strata.
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