Then the tension relaxed.

A neighboring tree stirred, a small, brightly colored bird flew by with a startled tweet, twigs began cracking, and Little Willie ran along on all fours until he was roughly pulled up by the jerk of his fully-extended chain. Back again in the opposite direction he scampered, excitedly muttering to himself the while.

There was now no doubt whatever that his quick eyes had seen something. He emitted a long drawn "Hoo—oo—oo! . . ." repeated it, and finally lost his self-control in a fit of gibbering ecstasy.

A second later, the reward of all those long hours of patience was at hand. The bush parted, the hideous face of an adult gorilla appeared in the opening, a low "cluck-cluck!" proceeded from its great, projecting muzzle, and Little Willie commenced wildly dancing up and down on his hands and feet.

The newcomer hesitated before advancing into the open, but I was already convinced by its action, its build and its voice that it belonged to the female persuasion—which was exactly what we wanted.

As the brute cautiously waddled into full view I saw that she was long past her prime. Her hair was grayish, her back bowed with age, and her gait awkward and jerky, a veritable grandmother.

My disappointment at this unexpected development was so keen that I nearly shouted at her to go away. From Little Willie's point of view she was undoubtedly a great success, for he put his arms around her at once; but from our own, and more humanitarian point of view, she was useless. Only a lunatic would think of trying to rejuvenate himself with the glands of a grandmother gorilla. The thing was ridiculous and, in our enthusiasm for the cause, wholly unanticipated. What we required were young, virile gorillas, not doddering old females.

I glanced at Croft through the corner of my eyes, forgetting for the moment that any dismay which he might be feeling would naturally be hidden behind his gorilla mask.

When I looked round again at Little Willie and his companion, I was surprised to find that three other gorillas were now approaching, and—what was still more exciting—they were youthful and active—and feminine.

"Aunts!" I thought. "Or, possibly, sisters. . . ."