For more than three hundred years an intense desire has been felt by explorers to discover and reveal to the world the secrets of the immediate regions of the North Pole. Nor has this desire been confined to mere adventurers. This volume sketches the latest American efforts (from the second Grinnel expedition to that of the "Polaris"), second to no others in heroism and success, and abounding in instructive and intensely interesting adventures both grave and gay.