Jack pointed out the letters. There was no disputing it. They had made a complete circle. For a moment they maintained silence in the face of this alarming fact. Then Mark exclaimed:

"I guess we're lost!"

"Lost on the moon!" added Jack, in an awestruck voice, and he gazed on the chill and desolate scene all about them; the great pinnacles of rocks, in fantastic form; the immense black caverns of craters on either hand; the sickly green vegetation.

"Lost on the moon!" whispered Mark, and there was not even an echo of his voice to keep them company. Only a chill, desolate silence!

CHAPTER XXIV

DESOLATE WANDERINGS

For a moment the three stood helplessly there and stared at each other. They could scarcely comprehend their situation at first. Then, with a glance at the cold and quiet scene all about them, a look up at the sun, which was the only cheerful object in the whole landscape, Jack observed: "Oh, I say, come on now, don't let's give up this way! We have only taken a wrong turn, and I'll wager that the projectile will be just around the corner. Come on," and he started off.

"Yes," said Mark, "that's the trouble. There are so many corners, and we have taken so many wrong turns, that we're all confused. I think the best thing to do will be to stay here a while and pull ourselves together."

"That's right," spoke old Andy. "Many a time in the woods I've got all confused-like, and then I'd sit down and think, and I'd get on the right path in a few minutes after."

"The trouble here is," said Jack, "that there are no woods. If there were we might know how to get out of them. But think of it! Lost on the moon, in the midst of a whole lot of queer mountain peaks, and big holes that would hold half a dozen cities of the United States at the same time, and never know it! This is a fearful place to be lost in!"