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Extentam tunefecit humum, ceu spiritus oris
Tendere vesicam solet, aut direpta bicornis
Terga capri. Tumor ille loci permansit, et alti
Collis habit speciem, longoque induruit ævo.

OF

ACTIVE AND EXTINCT

VOLCANO S;

WITH REMARKS ON

THEIR ORIGIN, THEIR CHEMICAL PHÆNOMENA,
AND THE CHARACTER OF THEIR PRODUCTS,

AS DETERMINED BY THE CONDITION OF THE EARTH DURING THE PERIOD

OF THEIR FORMATION.

BEING THE SUBSTANCE OF SOME LECTURES DELIVERED

BEFORE THE UNIVERSITY OF OXFORD,

WITH MUCH ADDITIONAL MATTER.

BY CHARLES DAUBENY, M.D. F.R.S.

FELLOW OF THE GEOLOGICAL SOCIETY, AND OF THE COLLEGE OF PHYSICIANS

IN LONDON ;

HONORARY MEMBER OF THE BRISTOL PHILOSOPHICAL AND LITERARY

INSTITUTION; CORRESPONDING SSOCIATE OF THE GIOENEAN

SOCIETY OF NATURAL HISTORY AT CATANIA;
PROFESSOR OF CHEMISTRY, AND FELLOW OF MAGDALEN COLLEGE, OXFORD.

πολλα δ' ενερθ' υδεος πυρα καιεται.

London:

PRINTED AND PUBLISHED BY W, PHILLIPS, GEORGE-YARD, LOMBARD-STREET ;

AND BY JOSEPH PARKER, OXFORD.

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