Letters on Iceland : Containing observations on the civil, literary, ecclesiastical, and natural history; antiquities, volcanos, basaltes, hot springs; customs, dress, manners of the inhabitants, &c. &c. made, during a voyage undertaken in the year 1772, by Joseph Banks, Esq. F.R.S. assisted by Dr. Solander, F.R.S. Dr. J. Lind, F.R.S. Dr. Uno Von Troil, and several other literary and ingenious gentlemen. Written by Uno Von Troil, D.D. first chaplain to his Swedish Majesty, almoner of the Swedish orders of knighthood, and member of the Academy of Sciences at Stockholm. To which are added the letters of Dr. Ihre and Dr. Bach to the author, concerning the Edda and the elephantiasis of Iceland: Also, Professor Bergman's curious observations and chemical examination of the lava and other substances produced on the island. With a new map of the island, and representation of the remarkable boiling fountain called by the inhabitants Geyser.