Note 238 — Chapter II · (continued 2)

To give one instance of the extent to which these operate, it may be mentioned, that in 1815 an earthquake and volcanic eruption broke forth in Sumbawa, which shook the ground ‘through an area of 1,000 miles in circumference,’ and the detonations of which were heard at a distance of 970 geographical miles. Somerville's Connexion of the Physical Sciences, p. 283; Hitchcock's Religion of Geology, p. 190; Low's Sarawak, p. 10; Bakewell's Geology, p. 438.