[…] But when we find that they [volcanoes] are but few in Number, and the chiefeſt of thoſe too near the torrid Zone, and from their Tops to iſſue forth, now clear Fire, then thick, black Smoke, and ſometimes little or nothing at all; we muſt conclude, that they are only particular Fires, probably of the Sun’s kindling at firſt, and ſince continued by the caſual and incidental Applications of that Pabulum, which thoſe Part of the Earth adminiſter to them.