for the author of the new and disquieting sound that had outraged his ears.
Simultaneously Lieutenant Harold Percy Smith-Oldwick vaulted nimbly out of the cockpit on the opposite side of his plane, calling to the girl to follow his example. The girl, realizing the futility of leaping to the ground, chose the remaining alternative and clambered to the top of the upper plane.
Numa, unaccustomed to the idiosyncrasies of construction of an airship and having gained the forward cockpit, watched the girl clamber out of his reach without at first endeavoring to prevent her. Having taken possession of the plane his anger seemed suddenly to leave him and he made no immediate move toward following Smith-Oldwick. The girl, realizing the comparative safety of her position, had crawled to the outer edge of the wing and was calling to the man to try and reach the opposite end of the upper plane.
It was this scene upon which Tarzan of the Apes looked as he rounded the bend of the gorge above the plane after the pistol shot had attracted his attention. The girl was so intent upon watching the efforts of the Englishman to reach a place of safety, and the latter was so busily occupied in attempting to do so that neither at once noticed the silent approach of the ape-man.
It was Numa who first noticed the intruder. The lion immediately evinced his displeasure by directing toward him a snarling countenance and a series of warning growls. His action called the attention of
