When the great earthquake of Coseguina, in Nicaragua, took place,
January 23, 1835, the subterranean noise--the sonorous waves in the
earth--was heard at the same time on the island of Jamaica and on the
plateau of Bogota, 8740 feet above the sea, at a greater distance than
from Algiers to London. In the eruptions of the volcano on the island
of St. Vincent, April 30, 1812, at 2 A.M., a noise like the report of
cannons was heard, without any sensible concussion of the earth, over a
space of 160,000 geographical square miles. There have also been heard
subterranean thunderings for two years without earthquakes.