My Dear Sir,

I have the pleasure of sending you per Book post copy of a paper of mine on the Glacial phenomena of Caithness ¹—where, it seems to me, we have a very interesting example of glaciation having taken place under marine conditions, & where the means of proving this are unusually good.²

In the first place the glacial scoring on the soft shaly flags of that district runs from N.W to S.E. across the angle or extreme north-east corner of Scotland—with a N.W. stos-seite.— Secondly—the drift covering these ice worn rocks—very generally contains fragments of Arctic shells— Foraminifera &c—and what is very interesting—the shells are often very well ice-marked—being rubbed & scratched like the stones.³

—As you may not care about reading all the paper I have marked some of the passages which I have thought might most interest you—

The Table, no. II, at p. 280 contains some facts w^h. seem to me very interesting—as for example the remarkably high proportion of N.E. American forms in what seem to be the older glacial marine beds of Scotland.⁴

Caithness is just the place where we might expect traces of marine conditions during the glacial period—being a low outlying region—a jutting-out corner—not likely to be covered by glaciers, but very likely to be in the way of drifting ice.

I am | Yours very truly | Tho^s. F. Jamieson

Cha^s. Darwin Esq. F.R.S. | &c &c