1From Benjamin Franklin to Jared Eliot, 16 July 1747 (Franklin Papers)
...that Mountain was formerly a Volcano, consequently hollow within. Such Springs, if such...
2From Benjamin Franklin to [Peter Franklin], 7 May 1760 (Franklin Papers)
...cavern may at length be filled, and the volcano connected with it cease burning, as many...
3From Benjamin Franklin to the Marquis de Condorcet, 20 March 1774 (Franklin Papers)
.... 5. I do not know that any Marks of Volcanos any Lava or Pomice Stone have been met with in...
4John Adams to Cotton Tufts, 23 June 1776 (Adams Papers)
...will blaze out like a Fire ship or a Volcano. New York still acts in Character, like a...
5To Benjamin Franklin from Rudolph Erich Raspe, 14 August 1777 (Franklin Papers)
An Account of Some German Volcanos, and Their Productions
6To Benjamin Franklin from Benjamin Vaughan, 10 October 1779 (Franklin Papers)
...1749), facing p. cx, of the Peruvian volcano Cotopaxi and its adjacent mountains, to which...
7From Benjamin Franklin to Jean-Louis Giraud Soulavie, 22 September 1782 (Franklin Papers)
...which is thrown out from the Depths of our Volcanoes gave me great pleasure. It has long been...
8To Benjamin Franklin from Soulavie, 21 October 1782 (Franklin Papers)
...(Paris, 1781), which dealt with volcanoes in Italy and contained 158 pages of commentary by...
9To Benjamin Franklin from François Steinsky, 3 August 1783 (Franklin Papers)
...to demonstrate the causes of earthquakes, volcanoes, and other subterranean disturbances. The...
10From James Madison to Thomas Jefferson, 25 April 1784 (Madison Papers)
...a French geologist best known as a student of volcanoes; and the son of Buffon, Georges Louis...