Its hunched back and narrow shoulders gave nothing of weakness to its appearance, suggesting rather an inhuman plenitude of bone and muscle behind. At first it was crouched, as if on all-fours, but then it reared. For all its legs were bent, its great length of body made it considerably taller than I. Upper limbs--I hesitate at calling them arms--sparred questingly at me. I moved a stride backward, but kept my face to the enemy. "You killed Gird!" I accused it, in a voice steady enough but rather strained and shrill. "Come on and kill me! I promise you a damned hard bargain of it." The creature shrank away in turn, as though it understood the words and was momentarily daunted by them. Its head, which I could not make out, sank low before those crooked shoulders and swayed rhythmically like the head of a snake before striking. The rush was coming, and I knew it. "Come on!" I dared it again. "What are you waiting for? I'm not chained down, like Gird. I'll give you a devil of a fight." I had my fists up and I feinted, boxer-wise, with a little weaving jerk of the knees. The blot of blackness started violently, ripped out a snarl from somewhere inside it, and sprang at me. I had an impression of paws flung out and a head twisted sidewise, with long teeth bared to snap at my throat. Probably it meant to clutch my shoulders with its fingers--it had them, I had felt them on my knee at the séance. But I had planned my own campaign in those tense seconds. I slid my left foot forward as the enemy lunged, and my left fist drove for the muzzle. My knuckles barked against the huge, inhuman teeth, and I brought over a roundabout right, with shoulder and hip driving in back of it. The head, slanted as it was, received this right fist high on the brow. I felt the impact of solid bone, and the body floundered away to my left. I broke ground right, turned and raised my hands as before. [Illustration: "I felt the impact of solid bone, and the body floundered away."] "Want any more of the same?" I taunted it, as I would a human antagonist after scoring. The failure of its attack had been only temporary. My blows had set it off balance, but could hardly have been decisive. I heard a coughing snort, as though the thing's muzzle was bruised, and it quartered around toward me once more. Without warning and with amazing speed it rushed. I had no time to set myself now. I did try to leap backward, but I was not quick enough. It had me; gripping the lapels of my coat and driving me down and over with its flying weight. I felt the wet ground spin under my heels, and then it came flying up against my shoulders. Instinctively I had clutched upward at a throat with my right hand, clutched a handful of skin, loose and rankly shaggy. My left, also by instinct, flew backward to break my fall. It closed on something hard, round and smooth.