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 realized that they were a distinct species from any he had seen as though they had sprung originally from a cross between the forest lion of his acquaintance and a breed of which Numa of the pit might be typical.

The immediate obstruction in his way having been removed, Tarzan was for setting out in search of the spoor of the girl and Smith-Oldwick that he might discover their fate. He suddenly found himself tremendously hungry and as he circled about over the sandy bottom searching among the tangled network of innumerable tracks for those of his protégés, there broke from his lips involuntarily the whine of a hungry beast. Immediately Numa of the pit pricked up his ears and, regarding the ape-man steadily for a moment, he answered the call of hunger and started briskly off toward the south, stopping occasionally to see if Tarzan was following.

The ape-man realized that the beast was leading him to food, and so he followed and as he followed his keen eyes and sensitive nostrils sought for some indication of the direction taken by the man and the girl. Presently out of the mass of lion tracks, Tarzan picked up those of many sandled feet and the scent spoor of the members of the strange race such as had been with the lions the night before, and then faintly he caught the scent spoor of the girl and a little later that of Smith-Oldwick. Presently the tracks thinned and here those of the girl and the Englishman became well marked.

They had been walking side by side and there had