I have ever been prone to seek adventure and to investigate and experiment where wiser men would have left well enough alone. It therefore now occurred to me that the surest way of learning the exact attitude of this beast toward me would be to attempt to leave the room. I felt fairly secure in my belief that I could escape him should he pursue me once I was outside the building, for I had begun to take great pride in my ability as a jumper. Furthermore, I could see from the shortness of his legs that the brute himself was no jumper and probably no runner.

Slowly and carefully, therefore, I gained my feet, only to see that my watcher did the same; cautiously I advanced toward him, finding that by moving with a shuffling gait I could retain my balance as well as make reasonably rapid progress. As I neared the brute he backed cautiously away from me, and when I had reached the open he moved to one side to let me pass. He then fell in behind me and followed about ten paces in my rear as I made my way along the deserted street.

Evidently his mission was to protect me only, I thought, but when we reached the edge of the city he suddenly sprang before me, uttering strange sounds and baring his ugly and ferocious tusks. Thinking to have some amusement at his expense, I rushed toward him, and when almost upon him sprang into the air, alighting far beyond him and away from the city. He wheeled instantly and charged me with the most appalling speed I had ever beheld. I had thought his short legs a bar to swiftness, but had he been coursing with greyhounds the latter would have appeared as though asleep on a door mat. As I was to learn, this is the fleetest animal on Mars, and owing to its intelligence, loyalty, and ferocity is used in hunting, in war, and as the protector of the Martian man.

I quickly saw that I would have difficulty in escaping the fangs of the beast on a straightaway course, and so I met his charge by doubling in my tracks and leaping over him as he was almost upon me. This maneuver gave me a considerable advantage, and I was able to reach the city quite a bit ahead of him, and as he came tearing after me I jumped for a window about thirty feet from the ground in the face of one of the buildings overlooking the valley.

Grasping the sill I pulled myself up to a sitting posture without looking into the building, and gazed down at the baffled animal beneath me. My exultation was short-lived, however, for scarcely had I gained a secure seat upon the sill than a huge hand grasped me by the neck from behind and dragged me violently into the room. Here I was thrown upon my back, and beheld standing over me a colossal ape-like creature, white and hairless except for an enormous shock of bristly hair upon its head.

The thing, which more nearly resembled our earthly men than it did the Martians I had seen, held me pinioned to the ground with one huge foot, while it jabbered and gesticulated at some answering creature behind me. This other, which was evidently its mate, soon came toward us, bearing a mighty stone cudgel with which it evidently intended to brain me.

The creatures were about ten or fifteen feet tall, standing erect, and had, like the green Martians, an intermediary set of arms or legs, midway between their upper and lower limbs. Their eyes were close together and non-protruding; their ears were high set, but more laterally located than those of the Martians, while their snouts and teeth were strikingly like those of our African gorilla. Altogether they were not unlovely when viewed in comparison with the green Martians.

The cudgel was swinging in the arc which ended upon my upturned face when a bolt of myriad-legged horror hurled itself through the doorway full upon the breast of my executioner. With a shriek of fear the ape which held me leaped through the open window, but its mate closed in a terrific death struggle with my preserver, which was nothing less than my faithful watch-thing; I cannot bring myself to call so hideous a creature a dog.

As quickly as possible I gained my feet and backing against the wall I witnessed such a battle as it is vouchsafed few beings to see. The strength, agility, and blind ferocity of these two creatures is approached by nothing known to earthly man. My beast had an advantage in his first hold, having sunk his mighty fangs far into the breast of his adversary; but the great arms and paws of the ape, backed by muscles far transcending those of the Martian men I had seen, had locked the throat of my guardian and slowly were choking out his life, and bending back his head and neck upon his body, where I momentarily expected the former to fall limp at the end of a broken neck.

In accomplishing this the ape was tearing away the entire front of its breast, which was held in the vise-like grip of the powerful jaws. Back and forth upon the floor they rolled, neither one emitting a sound of fear or pain. Presently I saw the great eyes of my beast bulging completely from their sockets and blood flowing from its nostrils. That he was weakening perceptibly was evident, but so also was the ape, whose struggles were growing momentarily less.

Suddenly I came to myself and, with that strange instinct which seems ever to prompt me to my duty, I seized the cudgel, which had fallen to the floor at the commencement of the battle, and swinging it with all the power of my earthly arms I crashed it full upon the head of the ape, crushing his skull as though it had been an eggshell.

Scarcely had the blow descended when I was confronted with a new danger. The ape's mate, recovered from its first shock of terror, had returned to the scene of the encounter by way of the interior of the building. I glimpsed him just before he reached the doorway and the sight of him, now roaring as he perceived his lifeless fellow stretched upon the floor, and frothing at the mouth, in the extremity of his rage, filled me, I must confess, with dire forebodings.

I am ever willing to stand and fight when the odds are not too overwhelmingly against me, but in this instance I perceived neither glory nor profit in pitting my relatively puny strength against the iron muscles and brutal ferocity of this enraged denizen of an unknown world; in fact, the only outcome of such an encounter, so far as I might be concerned, seemed sudden death.

I was standing near the window and I knew that once in the street I might gain the plaza and safety before the creature could overtake me; at least there was a chance for safety in flight, against almost certain death should I remain and fight however desperately.

It is true I held the cudgel, but what could I do with it against his four great arms? Even should I break one of them with my first blow, for I figured that he would attempt to ward off the cudgel, he could reach out and annihilate me with the others before I could recover for a second attack.

In the instant that these thoughts passed through my mind I had turned to make for the window, but my eyes alighting on the form of my erstwhile guardian threw all thoughts of flight to the four winds. He lay gasping upon the floor of the chamber, his great eyes fastened upon me in what seemed a pitiful appeal for protection. I could not withstand that look, nor could I, on second thought, have deserted my rescuer without giving as good an account of myself in his behalf as he had in mine.

Without more ado, therefore, I turned to meet the charge of the infuriated bull ape. He was now too close upon me for the cudgel to prove of any effective assistance, so I merely threw it as heavily as I could at his advancing bulk. It struck him just below the knees, eliciting a howl of pain and rage, and so throwing him off his balance that he lunged full upon me with arms wide stretched to ease his fall.