Suddenly, however, my ears were jarred by a familiar sound. At once my senses cleared and I listened intently to the distant purring of a motor. Yes, there could be no mistake—an airplane was approaching. Now I could see it, a speck in the sky, far down the beach. Nearer and nearer it came. I sprang to my feet, and to my intense surprise found that the effort threw me quite a distance into the air. Instantly the thought flashed through my mind: “I must be on Mars!” But no, for my weight was not nearly enough lighter than my earthly weight to justify such a conclusion. For some reason my belt buckle and most of the buttons which held my clothes together were missing, so that my clothing came to pieces as I arose, and I had to shed it rapidly in order to avoid impeding my movements. I wondered at the cause of this. But my speculations were cut short by the alighting of the airplane a hundred yards down the beach. It seemed to land vertically, rather than run along the ground, but I could not be sure at that distance. What was my horror when out of it clambered not men but ants! Ants, six-footed and six feet high. Huge ants, four of them, running toward me over the glistening sands. Gone was all my languor as I seized a piece of driftwood and prepared to defend myself as well as I could. The increase in my jumping ability, although slight, coupled with an added buoyancy, might enable me to prolong the unequal encounter. The ants came slowly forward, four abreast, like a cavalry formation, while I awaited their onslaught, grasping the stick of driftwood firmly in my hand. When nearly upon me they executed right-by-troopers and started circling in an ever-narrowing circle. Suddenly the ants wheeled and converged from all four points of the compass, clicking their mandibles savagely as they came. The whole movement had been executed with uncanny precision, without a single word of communication between the strange black creatures; in fact, without a single sound except the clicking of their mandibles and a slight rattling of their joints. How like a naval attack by a fleet of old-fashioned Ford cars, I thought. When within about ten feet of me, they made a concerted rush; but I leaped to one side, at the same time giving one of my antagonists a crack with my club as they crashed together in the center. This denouement seemed to confuse them, for they slowly extricated themselves from their tangle and withdrew for a short distance, where they again formed and stood glaring at me for a few minutes, clicking their jaws angrily. Then they rushed again, this time in close formation, but again I jumped to one side, dealing another blow with my club. Whereupon the fighting became disorganized, the ants making individual rushes, and I leaping and whacking as best I could.