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 tion of the cave's mouth at the far end of the gulch, some hundred feet away. As he neared the foot of the cliff his danger increased greatly. If he could reach the bottom and cover half the distance to the tree that stood in the center of the gulch he would feel comparatively safe for then, even if Numa appeared, he felt that he could beat him either to the cliff or to the tree, and to scale the first thirty feet of the cliff rapidly enough to elude the leaping beast would require a running start of at least twenty feet as there were no very good hand- or footholds close to the bottom—he had had to run up the first twenty feet like a squirrel running up a tree that other time he had beaten an infuriated Numa to it. He had no desire to attempt it again unless the conditions were equally favorable at least, for he had escaped Numa's raking talons by only a matter of inches on the former occasion.

At last he stood upon the floor of the gulch. Silent as a disembodied spirit he advanced toward the tree. He was half way there and no sign of Numa. He reached the scarred bole from which the famished lion had devoured the bark and even torn pieces of the wood itself and yet Numa had not appeared. As he drew himself up to the lower branches he commenced to wonder if Numa were in the cave after all. Could it be possible that he had forced the barrier of rocks with which Tarzan had plugged the other end of the passage where it opened into the outer world of freedom? Or was Numa dead? The ape-man doubted the verity of the latter sug-