A century of science in America : $b with special reference to the American Journal of Science, 1818-1918
History
A century of science in America : $b with special reference to the American Journal of Science, 1818-1918
American journal of science; Science -- United States -- History
However, the theory of deluges, whether of ocean or land streams, did
not hold the field unopposed. In 1823, Granger,[41] an observer whose
contributions to science total only six pages, speaks of the striæ on
the shore of Lake Erie as
“having been formed by the powerful and continued attrition of some
hard body.... To me, it does not seem possible that water under any
circumstances, could have effected it. The flutings in width, depth,
and direction, are as regular as if they had been cut out by a
grooving plane. This, running water could not effect, nor could its
operation have produced that glassy smoothness, which, in many parts,
it still retains.”
Hayes and also Conrad expressed similar views in the Journal 16 years
later.
The idea that ice was in some way concerned with the transportation of
drift has had a curious history. The first unequivocal statement, based
on reading and keen observation, was made in the Journal by Dobson in
1826:[42]
“I have had occasion to dig up a great number of bowlders, of red
sandstone, and of the conglomerate kind, in erecting a cotton
manufactory; and it was not uncommon to find them worn smooth on the
under side, as if done by their having been dragged over rocks and
gravelly earth, in one steady position. On examination, they exhibit
scratches and furrows on the abraded part; and if among the minerals
composing the rock, there happened to be pebbles of feldspar, or
quartz, (which was not uncommon,) they usually appeared not to be worn
so much as the rest of the stone, preserving their more tender parts
in a ridge, extending some inches. When several of these pebbles
happen to be in one block, the preserved ridges were on the same side
of the pebbles, so that it is easy to determine which part of the
stone moved forward, in the act of wearing.
These bowlders are found, not only on the surface, but I have
discovered them a number of feet deep, in the earth, in the hard
compound of clay, sand, and gravel....
I think we cannot account for these appearances, unless we call in the
aid of ice along with water, and that they have been worn by being
suspended and carried in ice, over rocks and earth, under water.”
In Dobson’s day the hypothesis of “gigantic floods,” “debacles,”
“resistless world-wide currents,” was so firmly entrenched that the
voice of the observant layman found no hearers, and a letter from Dobson
to Hitchcock written in 1837 and containing additional evidence and
argument remained unpublished until Murchison, in 1842,[43] paid his
respects to the remarkable work of a remarkable man.[44]
Public-domain text, read in full here on John Shaqi.
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