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tnust. have been lodged theré subsequently to its denudation. Also, 
when diluvial gravel contains organic remains, we may conclude 
that the /ast stage of its movement must have been subsequent to 
the existence of the animals whose remains are entombed in it. To 
contend, for instance, that the diluvial gravel of Norfolk was not re- 
moved from its original site till the post-tertiary period, is to draw 
an inference which the author deems altogether inadmissible. 
The great) mass of diluvium from the Cumbrian mountains re- 
poses on nothing more recent than the new red sandstone, and the 
author conceives that its transport might begin with the elevatory 
movements which disturbed that formation, when the surface of the 
present mountainous district began to rise permanently above the 
surface of the ocean, and the valleys began to be formed. This is 
the more remote limit of the period to which the transport of 
diluvium and: blocks can be referred ; the other hmit:is the emer- 
gence of Stainmoor (over which so many blocks passed) from be- 
neath the surface of the ocean, assuming the total inadequacy of 
the glacial theory to account for that transport. The present 
height of Stainmoor is stated to be about 1500 feet above the sea; 
consequently an elevation of from 1500 to 2000 feet must have 
taken place in these regions since the transport of the Cumbrian 
blocks across the Penim ridge—a fact which: appears corroborative 
of the author’s opinion, that the district had scarcely emerged from 
the: ocean at'the more remote of the above-mentioned limits of the 
prretle period of transport. 
Modes of Transport—Glacial Theory. 2: 'Bhis theory, in its appli- 
cation to the transport of blocks across Stainmoor, involves such 
obvious mechanical absurdities, that the author considers it totally 
unworthy of the attention of the Society. Polished and striated rocks 
were, however, detected by Dr. Buckland, and pointed out by him 
to the author in various places. The author does not feel himself 
- called upon to offer any decided opinion as to the cause of such 
phzenomena; he here speaks of the glacial theory only with re- 
ference to the solution it offers of the ‘problem of the txcnspint of 
blocks or detritus to distant localities. 
Iceberg Theory.—There appears to be no doubt that fodinen ice 
_ may have played an important part in some cases in the transport 
of large blocks, but the author doubts whether such agency has been 
at all employed in the case under consideration. In the first place, 
he cannot but consider it absurd to attribute the:formation of a’ bed 
of diluvium spread out with approximate uniformity over an extended 
area to the action of floating ice. Such a distribution of the trans- 
ported matter is the necessary effect of broad currents of water, 
which, at most, it is the merely possible effect of floating ice. Se- 
condly, there appears no adequate reason why blocks transported 
by floating ice should diminish in size as their distance from their 
original site increases ; why the Cumbrian blocks on the eastern 
coast of Yorkshire should be generally much smaller than those Jess 
remote from the place whence they came. Thirdly, the theory in 
