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POPULAR SCIENCE REVIEW. 
Malvern, Siluria, and Wales. Since that I have visited many 
parts of Europe, and an examination of the phenomena pre- 
sented, in very many localities, convinces me that the sea has 
never risen over the land of the interior of Great Britain since 
the days of the mammoth and the tichorhine rhinoceros. Nay 
more, I believe that it was a return of glacial climate to these 
regions which destroyed these animals at last, for on the 
Malverns there is not a hollow in which the debris I allude to 
is quarried that does not contain remains of the long-haired 
elephant and rhinoceros. The old river beds of this last 
Glacial Period, too, are full of their bones and teeth, rivers 
flooded by the melting of summer snow and excessive rainfall, 
and along the banks of which are found marine shells which 
have been washed into fresh-water beds during what has not 
been inaptly termed 66 a pluvial period ” by Mr. Tylor. 
Every investigation I have made of late years confirms me 
in the opinion that there has been a return of glaciers among 
the mountains, and snow and frost in the plains, of Great 
Britain, with a a wash of many waters ” in the summertime, 
since the days of Cave men and the Cave animals. In long- 
ago ages the waves of the sea rolled between the shores of the 
Malverns and the Cotswolds, and deposited with their currents 
the northern drifts and such marine gravels ; but these drifts 
have been since much disturbed and re- aggregated by fresh- 
water and subaerial agency, not by the waves and currents of a 
returning sea. The mammoth and tichorhine rhinoceros, 
with Palaeolithic man, were, I believe, inhabitants of Great 
Britain when the salt waters of the Severn straits glistened 
above the sites of Bristol, Gloucester, Tewkesbury, and Wor- 
cester, and lived on through all that long period which con- 
verted the Severn straits into the Severn river vale. The last 
of the Mammoths probably saw the configuration of this 
country much as it is now, but under a return of glacial and 
pluvial conditions, and under the dominion of rains, and snows, 
and frost. 
