A Description of Active and Extinct Volcanos: With Remarks on Their Origin, Their Chemical Phaenomena, 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 |
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Common terms and phrases
alluded analogy antient appear augite Auvergne basalt beds Breislac Buch calcareous carbonic acid cause cavities cellular characters colour compact composed cones conglomerate consider consist containing covered crater deposited dykes earth earthquakes ejected eruption Etna exhalations existence feet felspar fire formation formed former fragments glassy felspar granite heat hills hornblende Humboldt Hungary igneous island lake latter lava leucite likewise limestone Lipari Macaluba mass Memoir mica midst minerals Monte Mount Mount Etna Mount Vultur mountain muriatic Naples nature neighbourhood noticed observed obsidian occur origin period phænomena phænomenon Phlegrean fields pitchstone porphyry portion present probably pumice Puzzolana remark respect rise scoriæ scoriform seems seen shew shewn Sicily side Solfatara spot stone Strabo strata stream of lava structure substance sulphur sulphuretted hydrogen summit supposed surface tertiary thrown tion trachyte tuff valley vapours Vesuvius vitreous volcanic action volcanic matter volcanic products volcanic rocks whilst δε