It is always a little saddening to me to look down thus upon a dying world, to scan the endless miles of ocher, mosslike vegetation which carpets the vast areas where once rolled the mighty oceans of a young and virile Mars, to ponder that just beneath me once ranged the proud navies and the merchant ships of a dozen rich and powerful nations where today the fierce banth roams a solitude whose silence is unbroken except for the roars of the killer and the screams of the dying.

At night I slept, secure in the knowledge that my directional compass would hold a true course for Horz and always at the altitude for which I had set it-a thousand feet, not above sea level but above the terrain over which the ship was passing. These amazing little instruments may be set for any point upon Barsoom and at any altitude. If one is set for a thousand feet, as mine was upon this occasion, it will not permit the ship to come closer than a thousand feet to any object, thus eliminating even the danger of collision; and when the ship reaches its objective the compass will stop it a thousand feet above. The pilot whose ship is equipped with one of these directional compasses does not even have to remain awake; thus I could travel day and night without danger.

It was about noon of the third day that I sighted the towers of ancient Horz.

The oldest part of the city lies upon the edge of a vast plateau; the newer portions, and they are countless thousands of years old, are terraced downward into a great gulf, marking the hopeless pursuit of the receding sea upon the shores of which this rich and powerful city once stood. The last poor, mean structures of a dying race have either disappeared or are only mouldering ruins now; but the splendid structures of her prime remain at the edge of the plateau, mute but eloquent reminders of her vanished grandeur-enduring monuments to the white-skinned, fair-haired race which has vanished forever.