there certainly must be water in the valley where the city lies. Detail a couple of planes for reconnaissance and messenger service so that the base can keep in touch at all times with the advance party. When can your force move out?"
"We can load the lorries tonight," replied Capell, "and march about one o'clock tomorrow morning."
"Good," said the general, "keep me advised," and returning the others' salutes he departed.
As Tarzan leaped for the vines he realized that the lion was close upon him and that his life depended upon the strength of the creepers clinging to the city walls; but to his intense relief he found the stems as large around as a man's arm, and the tendrils which had fastened themselves to the wall so firmly fixed, that his weight upon the stem appeared to have no appreciable effect upon them.
He heard Numa's baffled roar as the lion slipped downward clawing futilely at the leafy creepers, and then with the agility of the apes who had reared him, Tarzan bounded nimbly aloft to the summit of the wall.
A few feet below him was the flat roof of the adjoining building and as he dropped to it his back was toward the niche from which an embrasure looked out upon the gardens and the forest beyond, so that he did not see the figure crouching there in the dark shadow. But if he did not see he was not long in ignorance of the fact that he was not alone, for scarcely had his feet touched the roof when a
