The Adventures of Ferdinand Count Fathom — Complete
“These,” said he, “are the great vents appointed by nature for the discharge of that rarefied air and combustible matter, which, if confined, would burst the globe asunder; but, besides the larger outlets, there are some small chimneys through which part of the heat transpires; a vapour of that sort, I conceive, must pass through the bed or channel of this spring, the waters of which, accordingly retain a moderate warmth.”