I had covered quite a little distance, and I was passing through a strip of wood which lay at the foot of one of the flat-topped hills, when I became conscious of the sensation of being watched. My life within Pellucidar has rather quickened my senses of sight, hearing, and smell, and, too, certain primitive intuitive or instinctive qualities that seem blunted in civilized man. But, though I was positive that eyes were upon me, I could see no sign of any living thing within the wood other than the many, gay-plumaged birds and little monkeys which filled the trees with life, color, and action. To you it may seem that my conviction was the result of an overwrought imagination, or to the actual reality of the prying eyes of the little monkeys or the curious ones of the birds; but there is a difference which I cannot explain between the sensation of casual observation and studied espionage. A sheep might gaze at you without transmitting a warning through your subjective mind, because you are in no danger from a sheep. But let a tiger gaze fixedly at you from ambush, and unless your primitive instincts are completely calloused you will presently commence to glance furtively about and be filled with vague, unreasoning terror. Thus was it with me then. I grasped my cudgel more firmly and unslung my javelin, carrying it in my left hand. I peered to left and right, but I saw nothing. Then, all quite suddenly, there fell about my neck and shoulders, around my arms and body, a number of pliant fiber ropes. In a jiffy I was trussed up as neatly as you might wish. One of the nooses dropped to my ankles and was jerked up with a suddenness that brought me to my face upon the ground. Then something heavy and hairy sprang upon my back. I fought to draw my knife, but hairy hands grasped my wrists and, dragging them behind my back, bound them securely. Next my feet were bound. Then I was turned over upon my back to look up into the faces of my captors. And what faces! Imagine if you can a cross between a sheep and a gorilla, and you will have some conception of the physiognomy of the creature that bent close above me, and of those of the half-dozen others that clustered about. There was the facial length and great eyes of the sheep, and the bull-neck and hideous fangs of the gorilla. The bodies and limbs were both man and gorilla-like. As they bent over me they conversed in a mono-syllabic tongue that was perfectly intelligible to me. It was something of a simplified language that had no need for aught but nouns and verbs, but such words as it included were the same as those of the human beings of Pellucidar. It was amplified by many gestures which filled in the speech-gaps.