Nor did Alden. Everything was as when Jethro lay down. The sound of his voice must have been heard by the Indian, who vanished as suddenly as he had appeared. It was easy for Alden to understand that, but he could not comprehend why the redskin should have shown himself at all. It was necessary to give some explanation to Jethro, but his young master had no purpose of telling everything. “I saw an Indian out there a few minutes ago and stepped across to tell you about it, but you were asleep and didn’t know any more than you do when you are awake. The best thing for you to do, Jeth, is to lie down and keep on sleeping.” “Do you mean dat?” eagerly asked the other. “Of course I do.” “All right; if you finds you have to do any trampin’ bout I’ll be obleeged if you doan’ step into my mouth agin. If you do I’ll bite your foot in two.” Alden without noticing the fellow walked back to his first position. He did not give Jethro a second thought. Despite the self-evident cause of the disappearance of the skulking warrior, the youth was ill at ease. He decided to await the explanation of Shagbark, who would probably join him ere long. But worst of all, the proof had been given that the redskins whom all dreaded were prowling near the camp. One of them would not have ventured alone to the neighborhood. There might be a dozen, a score, or half a hundred who were formulating if they had not already formulated a plan to surprise and massacre every one of the whites. As to what that plan was he was as ignorant as the slumbering Jethro Mix. All that Alden could do was use his eyes and hearing. No fear of his falling asleep, even if he did lean against the thick spokes of the wagon wheel. He knew better than to confine his attention to the spot where the warrior had appeared and vanished. The fact of his having done so would prevent his repeating the trick. He would aim to strike his next blow from another point. And that such was the fact became apparent a few minutes later when a fluttering disturbance similar to the first caught his eye, though from a point well to the left. It was so far over indeed that, without any hesitation the youth moved a rod or more in that direction, keeping so far as he could in the shadow of the Conestoga, but the change of position carried him into the moonlight, and he crossed half the interval between his wagon and the one next to it. The fewness in number of vehicles compelled their wide separation, for the circle was large. There was no call for him to go any farther, since the sentinel there must be as vigilant as himself, and it was not wise to leave his own charge unguarded even for a few minutes. Still further, Shagbark had warned every one against abandoning his post. Because of all this, Alden halted just beyond the shadow thrown out by the huge wide cover of the Conestoga. His nerves were at the highest tension, and the feeling was strong upon him that some frightful danger was stealing upon the camp.