Let me then beg the readers attention for a moment, that I
may justify myself from that charge, and place in its proper light this
authority, upon so material a point in geology.
I had examined Scotland from the one end to the other before I saw one
stone of granite in its native place, I have moreover examined almost
all England and Wales, (excepting Devonshire and Cornwall) without
seeing more of granite than one spot, not many hundred yards of extent;
this is at Chap; and I know, from information, that there is another
small spot in the middle of England where it is just seen. But, let me
be more particular with regard to Scotland, the example given in proof.
I had travelled every road from the borders of Northumberland and
Westmoreland to Edinburgh; from Edinburgh, I had travelled to
Port-Patrick, and from that along the coast of Galloway and Airshire
to Inverary in Argyleshire, and I had examined every spot between the
Grampians and the Tweedale mountains from sea to sea, without seeing
granite in its place. I had also travelled from Edinburgh by Grief,
Rannock, Dalwhiny, Fort Augustus, Inverness, through east Ross and
Caithness, to the Pentland-Frith or Orkney islands, without seeing one
block of granite in its place.
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