The Boulder-clay of Galway and Clew Bays is, on the contrary, made up almost wholly of triturated limestone,—so much so that it is even now a loosely consolidated limestone and stands in vertical cliffs. Imbedded in it are blocks of limestone and granite—one of the latter, at Galway, now on the beach, being from Moycullen and containing about 1600 cubic feet of stone. But neither here nor in Clew Bay, nor elsewhere in Ireland where the same kind of drift occurs, could I see on the contained stones those splendidly planed and grooved surfaces which distinguish most of the largest and smallest stones of the Lancashire Drift. The material and its imbedded stones are all distinctly local.
The explanation of these distinctions I propose to defer until I publish Part II. of the "Drift Beds of the North-west of England," having written this short description of the Irish Drift for record as well as to elicit, if possible, further information.
