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II.—Contributions to the Study of Volcanos

Published online by Cambridge University Press:  01 May 2009

J. W. Judd
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Extract

During the earliest periods concerning which we have historical records in Southern Europe, Vesuvius was certainly inactive, its true character, indeed, long remaining wholly unsuspected; nor do the eruptions of Etna at this epoch appear to have been of such a character as to have powerfully arrested the attention and excited the imaginations of the oldest inhabitants of the district. Far otherwise was it, however, with the volcanos of the Lipari Islands; in these the manifestations of igneous activity had been so constant and striking, that priests, poets, and philosophers had successively associated the locality with their most marvellous stories.

Type
Original Articles
Information
Geological Magazine , Volume 2 , Issue 3 , March 1875 , pp. 99 - 115
Copyright
Copyright © Cambridge University Press 1875

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References

page 110 note 1 There exists a remarkable discrepancy between some of the estimates of the height of the floor of the crater of Vulcano above the sea-level. Deville states it to be 837 feet, while Mr. Mallet gives it as only “a few feet,” stating the depth of the crater to be from “1100 to 1200 feet.“ My own measurements with the aneroid were repeated on three different occasions, and varied only between 497 and 535 feet. The estimate given in the text is that of M. Salino, and appears to be derived from the official survey. Possibly some irregularity in the action of Mr. Mallet’s barometer may account for the very inaccurate results which he was so unfortunate as to obtain, not only on this occasion, but in other observations about the same time at Stromboli.

page 112 note 1 The mixture of sulphur and selenium deposited here received from Haidinger the name of “Volcanite”.