[15]

Book 1 Chap 5 [p. 88]

On a closer investigation of extinct volcanos, we find proofs that they broke out at successive eras, & that the eruptions of one group were often concluded long before others had commenced their activity. Some were burning when one class of organic beings were in existence, others came into action when a different & new race of animals & plants existed,—it is more than probable, therefore, that the convulsions caused by subterranean movements, which are merely another portion of the volcanic phenomena, occurred also in succession, and their effects must be divided into separate sums, and assigned to separate periods of time; and this is not all:—when we examine the volcanic products, whether they be lavas which flowed out under water or upon dry land, we find that.

[15v]

intervals of time, often of great length, intervened between their formation, and that the effects of one eruption were not greater in amount than that which now results during ordinary volcanic convulsions. The accompanying or preceding earthquakes, therefore, may be considered to have been also successive, often interrupted by intervals of time, & not to have exceeded in violence those now experienced in the ordinary course of nature.

Fitzroy

p. 412,

A. Vogelborg was on an islet at S. end of Mocha at the time

[pp. 414-415] "Their boat was hauled up on the top of the rocky islet and expecting to be washed off, they held by it in readiness, The boat was

[16]

going nearly east and west. During the earthquake some water in her bottom ran as fast from one end of the boat to the other as if some one were quickly lifting one end off the ground and letting it down again. It did not wash from side to side at any time. Two forked sticks were stuck in the ground, about three yards apart; another lay across them for hanging things to dry. These sticks also were nearly east and west of one another: and during the shock they waved to and fro till the forks touched, and the cross stick fell.