...pure combustible matter in any quantity ; and on making the experiment on a portion of lava taken up up in the ladle, it appeared that the disengagement...disengaged from the water by boiling. A wire of copper of ^th of an inch in diameter, and a wire of silver of ^th, introduced into the lava near its source,...

...intensity when it was raised into the air by an iron ladle. I put the circumstance, however, bejond the possibility of doubt: I threw some of the fused...disengaged; it was in very minute quantity only, and when analyzed on my return proved to be common air, a little less pure than that disengaged from the water...

...glowed with great brilliancy when nitre or chlorate of potash was projected upon its surface. When some fused lava was thrown into water, and a glass bottle filled with water was inverted over it, only a very minute quantity of gas was disengaged, which proved on analysis to...

...siliceous . sand in the bottom : I closed it at the moment, and examined the air on my return. A measure pf .it mixed with a measure of nitrous gas gave exactly...disengaged from the water by boiling. A wire of copper of •j^th of an inch in diameter, and a wire of silver of ^jth, introduced into the lava near its source,...

...under a kind of bridge formed of cooled lava ; but it re-appeared sixty or seventy yards further down. down. Where it issued from the mountain, it was nearly...disengaged from the water by boiling. A wire of copper of ^th of an inch in diameter, and a wire of silver of jBth, introduced into the lava near its source,...