AND GRAVELS NEAR BALLYGALLEY HEAD. 681 
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 im- 
bedded stones are all distinctly local. 
The explanation of these distinctions I propose to defer until I 
publish Part IT. 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. 
