...vapours are constantly rising, destroying vegetation in the vicinity, but especially to the lee-' ward, where they are carried by the wind. By daylight nothing...these places, except a kind of tremulous motion of thd heated atmosphere near the surface of the ground. But at night the whole is lighted by a flickering,...

...many places where the ground is depressed and bare, resembling a honey-combed, ferruginous clay-pit, from which sulphurous vapors are constantly rising,...the whole is lighted by a flickering, bluish, and etherial flame, like that of burning spirits, which spreads at one moment over the whole surface, at...

...is depressed and bare, resembling a honey-combed ferruginous clay-pit, from which sulphurous vapours are constantly rising, destroying vegetation in the...and ethereal flame, like that of burning spirits, which spreads at one moment over the whole surface, at the next shoots up into high spires, and then...