[513] Geology of the American Exploring Expedition, in 1838-1842, p. 354.
[514] Ibid. p. 328.
[515] See chap. 29.
[516] Hamilton (writing in 1770) says, "the new mountain produces as yet but a very slender vegetation."—Campi Phlegræi, p. 69. This remark was no longer applicable when I saw it, in 1828.
[517] Hamilton's Campi Phlegræi, folio, vol. i. p. 62; and Brieslak, Campanie, tome i. p. 186.
[518] Account of the Eruption of Vesuvius in October, 1822, by G. P. Scrope, Esq., Journ. of Sci. &c. vol. xv. p. 175.
[519] Mr. Forbes, Account of Mount Vesuvius, Edin. Journ. of Sci. No. xviii. p. 195. Oct. 1828.
[520] Ibid. p. 194.
[521] Monticelli and Covelli, Storia di Fenon. del Vesuv. en 1821-23.
[522] Campi Phlegræi.