[footnote] *Drake, 'Nat. and Statist. View of Cincinnati', p. 232-238;
Mitchell, in the 'Transactions of the Lit. and Philos. Soc. of New York',
vol. i., p. 281-308. In the Piedmonese county of Pignerol, glasses of
water, filled to the very brim, exhibited for hours a continuous motion.
As the mass of the people are seldom able to rise to general views, and are
consequently always disposed to ascribe great phenomena to local telluric
and atmospheric processes, wherever the shaking of the earth is continued
for a long time, fears of the eruption of a new volcano are awakened. In
some few cases, this apprehension has certainly proved to be well grounded,
as, for instance, in the sudden elevation of volcanic islands, and as we see
in the elevation of the volcano of Jorullo, a mountain elevated 1684 feet
above the ancient level of the neighboring plain, on the 29th of September
1759, after ninety days of earthquake and subterranean thunder.
If we could obtain information regarding the daily condition of all the
earth's surface, we should probably discover that the earth is almost always
undergoing shocks at some point of its superficies, and is continually
influenced by the reaction
p 212
of the interior on the exterior.
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