He saw that the roofs rose to the same level as that upon which he stood unbroken to the north to the next street intersection. Directly below him was a flare. To reach the pavement in safety it was necessary that he find as dark a portion of the avenue as possible. And so he sought along the edge of the roofs for a place where he might descend in comparative concealment.

He had proceeded some little way beyond a point where the street curved abruptly to the east before he discovered a location sufficiently to his liking. But even here he was compelled to wait a considerable time for a satisfactory moment for his descent, which he had decided to make down one of the pillars of the arcade. Each time he prepared to lower himself over the edge of the roofs, footsteps approaching in one direction or another deterred him until at last he had almost come to the conclusion that he would have to wait for the entire city to sleep before continuing his flight.

But finally came a moment which he felt propitious and though with inward qualms, it was with outward calm that he commenced the descent to the street below.

When at last he stood beneath the arcade he was congratulating himself upon the success that had attended his efforts up to this point when, at a slight sound behind him, he turned to see a tall figure in the yellow tunic of a warrior confronting him.

Chapter XXII

Out of the Niche

Numa, the lion, growled futilely in baffled rage as he slipped back to the ground at the foot of the wall after his unsuccessful attempt to drag down the fleeing ape-man. He poised to make a second effort to follow his escaping quarry when his nose picked up a hitherto unnoticed quality in the scent spoor of his intended prey. Sniffing at the ground that Tarzan's feet had barely touched, Numa's growl changed to a low whine, for he had recognized the scent spoor of the man-thing that had rescued him from the pit of the Wamabos.

What thoughts passed through that massive head? Who may say? But now there was no indication of baffled rage as the great lion turned and moved majestically eastward along the wall. At the eastern end of the city he turned toward the south, continuing his way to the south side of the wall along which were the pens and corrals where the herbivorous flocks were fattened for the herds of domesticated lions within the city. The great black lions of the forest fed with almost equal impartiality upon the flesh of the grass-eaters and man. Like Numa of the pit they occasionally made excursions across the desert to the fertile valley of the Wamabos, but principally they took their toll of meat from the herds of the walled city of Herog, the mad king, or seized upon some of his luckless subjects.

Numa of the pit was in some respects an exception to the rule which guided his fellows of the forest in that as a cub he had been trapped and carried into the city, where he was kept for breeding purposes, only to escape in his second year. They had tried to teach him in the city of maniacs that he must not eat the flesh of man, and the result of their schooling was that only when aroused to anger or upon that one occasion that he had been impelled by the pangs of hunger, did he ever attack man.