98 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 
carried to a greater distance bear the same testimony. It also ap- 
pears that the blocks become smaller as we approach the coast of 
Yorkshire, till they degenerate into pebbles and gravel in the more 
remote localities in which the Cumbrian rocks can be identified. 
These facts are strongly in favour of those views which would refer 
the transport of these masses to diluvial currents. 
I have already alluded to the statement of Mr. Phillips, that 
boulders are observed in Yorkshire from the Kirkby Stephen conglo- 
merate, but that others have doubted the possibility of identifymg 
them with sufficient certainty. The angular form, however, of the 
fragments of limestone imbedded in this conglomerate gives to it a very 
peculiar character, and no individual testimony can be deemed stronger 
than that just quoted. We may be justified, therefore, in reasoning 
on this fact as supported by strong, if not by absolutely conclusive, evi- 
dence. If it be admitted, it affords an absolute proof of the exist- 
ence of currents such as those above described, since it is evident that 
no floating ice could possibly transport a boulder from the depths of 
the vale of Eden over the heights of Stammoor. These boulders, 
therefore, well merit the attention of those who may have the oppor- 
tunity of examining them. Their transport presents not the smallest 
difficulty in the diluvial theory. 
I may remark in conclusion, that while the diluvial theory as above 
developed assigns an adequate cause for the transport of blocks from 
the Cumbrian mountains, it explains far better than any other the 
actual disposition of the smaller detritus in extensive superficial layers, 
and the scooping-out of the great valleys of the district. The phze- 
nomena of elevation, of denudation and transport, regarded in the 
point of view in which I have endeavoured to place them, appear to 
me to present that general accordance and harmony which afford one 
of the best tests of truth. 
