A Few years ago, in one of three or four papers treating of the “high-level shelly clays” of Scotland, I referred at some length to the interesting section at Clava, near Inverness, first described by Mr. Jas. Fraser, C.E., and inquired—Is it part of an old sea-shore or bottom, laid down by the sea where we now find it, and therefore proving a submergence of at least 500 feet ?

I submitted a number of facts and considerations which, I thought, tended to show that this instance at Clava cannot be received as a satisfactory proof of submergence.