We would now wish to draw the attention of the reader from the Indian Appenines, to Pico, a mountain which rears its lofty head in an island of the same name. - It is filled with dismal dark caverns, or volcanoes, which frequently emit flame, smoke, and ashes, to a great distance. At the foot of it, towards the east, is a spring of fresh water, which is generally cold, but sometimes is so heated with subterraneous fire, as to rush forth in torrents, with a kind of ebullition like boiling water; equalling that in heat, and sending forth a steam of sulphureous fetid vapours, mixed with liquefied stones, minerals, and flakes of earth, all on fire, in such quantities, and with such violence, as to form a kind of promontory, on the declivity of the coast, and at the distance of 1200 paces from the fountain, which is vulgarly called Mysterious. - Such is the account given by Ortelius.