DILUVIAL PEBBLES AND CLAY ON CAMPSEY HILLS. 201 
PROOFS OF DILUVIAL ACTION IN SCOTLAND. 
I will now proceed to consider the evidence we have, of a similar 
inundation producing similar effects in Scotland. 
Colonel Imrie, in his Geological Account of the Campsey 
Hills, published in the second volume of the Transactions of the 
V ernerian Society, page 35, has described a series of phenomena 
resulting from diluvial action, in the southern district of Stir¬ 
lingshire. 
He refers the removal of certain portions of the trap-rocks, which 
generally form the incumbent stratum of the Campsey district, to the 
effect of heavy and rapid currents of water, and finds many parts 
of their actual surface to be strewed over with an admixture of 
drifted clay and rolled pebbles, analogous to that which occurs along 
the east coast of England from Essex to Northumberland, and to bear 
marks of violence from the friction of heavy masses of stone that have 
been drifted over it. 
“ In all situations of this district,” says he, “ where the trap has 
disappeared, the vegetable or surface soil rests upon a strongly 
tenacious blue clay, much mixed with water-worn stones, and this 
blue clay rests upon sandstone. Among the water-worn stones 
imbedded in the clay, I seldom found specimens of the native rocks 
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