...form and situation, for experiments on the effect of its attraction on the pendulum: and it would be To what extent subterraneous cavities may exist even...circumstance which would give alloys of the metals ot the earths the power of producing volcanic phenomena, namely, their extreme facility of oxidation,...

...great a length of time, must in all probability, become filled with atmospheric air in its quiet state. The limestone caverns of Carniola, some of which contain many hundred thousand cubic feet of air, show the vast extent to which subterraneous cavities may exist, even in common rocks...

...steam, must, there is every reason to believe, in its quiet state, become filled with atmospheric air. To what extent subterraneous cavities may exist even...metals of the earths the power of producing volcanic phenomena, namely, their extreme facility of oxidation, must likewise prevent them from ever being...

...must, there is every reason to believe, in its quiet state, become filled with atmospheric air.* " To what extent subterraneous cavities may exist, even...so is the air more fit for combustion. " The same circumstances which would give alloys of the metals of the earths the power of producing volcanic phenomena,...

...must, there is every reason to believe, in its quiet state, become filled with atmospheric air.* " To what extent subterraneous cavities may exist, even...limestone caverns of Carniola, some of which contain manj hundred thousand cubical feet of air ; and in proportion as the depth of an excavation is greater,...

...oxidation of the metals of the earths be the causes of the phenomena, some of these substances ought occasionally to be found in the lava, or the combustion...is greater, so is the air more fit for combustion. * In 1814, in 1815, and in January 1819, when Vesuvius was comparatively tranquil, I observed the solfaterra...