I have seen it at Lednoc upon the
Ammon, where it forms a cascade in that river, about five or six
miles west of Campsy-lin. It appears to run from the Tay east through
Strathmore, so that it may be considered as having been traced for
twenty or thirty miles, and westwards to Drummond castle, perhaps much
farther.
Two small veins of the same kind, only two or three feet wide, may be
seen in the bed of the Water of Leith, traversing the horizontal strata,
the one is above St Bernard's well, the other immediately below it. But,
more particularly, in the shire of Ayr, to the north of Irvine, there
are to be seen upon the coast, between that and Scarmorly, in the space
of about twenty miles, more than twenty or thirty such dykes (as they
are called) of whin-stone. Some of them are of a great thickness; and,
in some places, there is perceived a short one, running at right angles,
and communicating with other two that run parallel.
There is in this country, and in Derbyshire[14], another regular
appearance of this stone, which Cronstedt has not mentioned. In this
case, the strata are not broken in order to have the whin-stone
introduced, they are separated, and the whin-stone is interjected in
form of strata, having various degrees of regularity, and being of
different thickness.
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