This is not the place to speak of the dangers which beset the seaman who dares to penetrate into the silent recesses of the Polar Seas. And, indeed, a tale so often told would have little interest for the English reader, who cannot fail to be familiar with the adventures of the Arctic explorers, from Hudson to M'Clure, through the long list of honoured and immortal names--Parry, Ross, Franklin, Scoresby, Davis, M'Clintock, and Sir Humphrey Gilbert. Too many, alas! have fallen victims to their heroic courage, and the most fortunate have not returned in safety without accomplishing prodigies of valour and energy, without undergoing the severest privations and most terrible sufferings. Their efforts and their sacrifices, let us add, have not been barren. Not only has the great North-West Passage from the Atlantic to the Pacific been finally explored, but the discovery of an open and comparatively warm sea around the geographical pole of our globe--the discovery, too, of the magnetic pole, and of the double pole of cold--ought to be ranked with the most brilliant scientific achievements on which our age can pride itself. Thanks to those heroes of science, the Arctic Polar region is now extensively known and very generally surveyed. It is not possible to say so much of the Antarctic Polar region. There the approach is not facilitated by any continent, or, indeed, any fraction of a continent. The "Land of Fire" (_Tierra del Fuego_), which is the nearest point, is not calculated to brighten the hopes of the explorer, and the difficulties and perils which oppose themselves to his southward progress seem insurmountable. Three illustrious travellers--sons of England, France, and America respectively--Sir James Ross, Dumont D'Urville, and Rear-Admiral Charles Wilkes, attempted, however, in the first half of the present century, to penetrate the mystery which enshrouds this extremity of our globe.