waited, listening and scenting, until he might assure himself that there was no Numa within his immediate vicinity, or, at least, none that sought him. And when he was quite sure that there was no lion close by in the forest, and none in the clearing between himself and the wall, he dropped lightly to the ground and moved stealthily out into the open.
The rising moon, just topping the eastern cliffs, cast its bright rays upon the long stretch of open garden beneath the wall. And, too, it picked out in clear relief for any curious eyes that chanced to be cast in that direction, the figure of the giant ape-man moving across the clearing. It was only chance, of course, that a great lion hunting at the edge of the forest saw the figure of the man halfway between the forest and the wall. Suddenly there broke upon Tarzan's ears a menacing sound. It was not the roar of a hungry lion, but the roar of a lion in rage, and, as he glanced back in the direction from which the sound came, he saw a huge beast moving out from the shadow of the forest toward him.
Even in the moonlight and at a distance Tarzan saw that the lion was huge; that it was indeed another of the black-maned monsters similar to Numa of the pit. For an instant he was impelled to turn and fight, but at the same time the thought of the helpless girl imprisoned in the city flashed through his brain and, without an instant's hesitation, Tarzan of the Apes wheeled and ran for the wall. Then it was that Numa charged.
Numa, the lion, can run swiftly for a short dis-
