I shall never forget that tree. It was our first experience of moon life, _in_ the Moon. Darkness was coming on when we finally halted beneath it. When I say _darkness_ I mean that strange kind of twilight which was the nearest thing to night which we ever saw in the Moon. The tree’s height, I should say, would be at least three hundred feet and the width of it across the trunk a good forty or fifty. Its appearance in general was most uncanny. The whole design of it was different from any tree I have ever seen. Yet there was no mistaking it for anything else. It seemed—how shall I describe it?—_alive_. Poor Chee-Chee was so scared of it his hair just stood up on the nape of his neck and it was a long time before the Doctor and I persuaded him to help us pitch camp beneath its boughs. Indeed we were a very subdued party that prepared to spend its first night on the Moon. No one knew just what it was that oppressed us but we were all conscious of a definite feeling of disturbance. The wind still blew—in that gentle, steady way that the moon winds always blew. The light was clear enough to see outlines by, although most of the night the Earth was invisible and there was no reflection whatever. I remember how the Doctor, while we were unpacking and laying out the rest of our chocolate ration for supper, kept glancing uneasily up at those strange limbs of the tree overhead. Of course it was the wind that was moving them—no doubt of that at all. Yet the wind was so deadly regular and even. And the movement of the boughs wasn’t regular at all. That was the weird part of it. It almost seemed as though the tree were doing some moving on its own, like an animal chained by its feet in the ground. And still you could never be sure—because after all the wind _was_ blowing all the time. And besides it moaned. Well, we knew trees moaned in the wind at home. But this one did it differently—it didn’t seem in keeping with that regular even wind which we felt upon our faces. I could see that even the worldly-wise practical Polynesia was perplexed and upset. And it took a great deal to disturb her. Yet a bird’s senses towards trees and winds are much keener than a man’s. I kept hoping she would venture into the branches of the tree; but she didn’t. And as for Chee-Chee, also a natural denizen of the forest, no power on earth, I felt sure, would persuade him to investigate the mysteries of this strange specimen of a Vegetable Kingdom we were as yet only distantly acquainted with. [Illustration: “_The Doctor kept glancing up uneasily_”]