"If I do not come by to-morrow morning," explained Thomas Jefferson, "then you will know that something has happened to me and you will go back if you can find your way."

"Not much!" declared Fred. "If you don't come we shall try to find out what has happened to you."

"No. No," said Thomas Jefferson abruptly. "But I shall come back."

"You're not going until after breakfast," suggested Grant quickly as the Indian apparently was about to depart.

"I will get breakfast when I come back," said Thomas Jefferson laconically.

Without any further conversation he at once departed, closely following the footprints of the three whom he believed had gone before him.

"Well, what's to be done now?" inquired George after the three Go Ahead Boys had remained silent while they watched the departing Navajo as long as he remained within sight.

"We'll get breakfast," replied Grant.

For a time conversation ceased while the boys were busily engaged in the preparation of their morning meal. In spite of the mystery surrounding them and the anxiety that more or less every one felt, they were all hungry. As a consequence the simple breakfast speedily was prepared and it was not until it had been eaten that the boys once more turned to the problem which now confronted them.

"I'm telling you," said Grant positively, "that Thomas Jefferson is all right. The only thing for us to do is to stay right here where we are until he comes back or John and Pete are brought here by Kitoni."

"I'm afraid something has happened to String," said Fred slowly.

"So you have said before," remarked Grant dryly. "Now the thing for you and for us all to do is just to hang on to ourselves and wait. We mustn't let this get on our nerves. If we do no one knows what we shall be up against."

Grant's companions did their utmost to carry out his suggestion, but there was little activity in which they could indulge and the time dragged heavily on their hands.

"How far do you think we've come into Thorn's Gulch?" asked Fred when several hours had elapsed.

"Six or eight miles," replied Grant promptly.

"Then we ought to be able to find our way out all right," said Fred.

"Of course we can," said Grant quietly, "though after we find our way out we haven't gotten to the end of our troubles."

For a time the suggestion made all three boys silent and serious. They were more than two thousand miles from home. One of their companions had not been seen for many hours and in spite of what he was willing to acknowledge every one of the Go Ahead Boys was now anxious concerning the safety of the missing John.

Not even a guide was left them and the continued failure of Zeke to return increased their fears.

Fred, the most easily discouraged of the Go Ahead Boys had been the most eager of all to enter upon the expedition. It was plain to his comrades now that his spirits were sinking and both were fearful of what the effect would be if Fred entirely lost hope.

"I tell you what we'll do," suggested Grant at last. "We'll try to make a copy of the map that Simon Moultrie had of the place where he had staked his claim."

"We can't make any copy," said Fred disconsolately, "we haven't anything to copy."

"Then we'll make it from memory," said Grant quietly. "Let me see," he continued, as he took a note book from his pocket and at once began to draw on a blank page. "Here's Thorn's Gulch," he added as he drew lines to indicate the great canyon. "We have come about six miles so we'll put our camp about here," he explained as he marked the location. "Now as I remember, Simon Moultrie had marked Two Crow Tree on this side of the Gulch and about so far from the place where the Gulch runs into the Grand Canyon. Then about so much further on the same side of the Gulch was Tom's Thumb. About half way between Two Crow Tree and Tom's Thumb on the other side of the Gulch was Split Rock. Then a little to the right in back here was the place he marked as the stake. Now, let me see, what were the figures and the letters he had there?"

"The first one," said Fred interested now in what Grant was saying, "was '1/2 m. n.e.'"

"That's right," said Grant, "and right below it was '1/4 m. s.e.'"

"And the last one at the bottom," joined in George, "was '1/4 m. n.n.e.'"

"There," Grant said with satisfaction as he held his drawing up for inspection. "I think we have reproduced Simon Moultrie's map closely enough to tell us about where we are and where we've got to go."

"Are we still going on?" inquired Fred.

"Of course we are going on," declared Grant. "We'll start just as soon as the others join us. Look yonder!" he said, abruptly leaping to his feet as he spoke and pointing to a distant spot on the side of the Gulch.

"There's something moving over there."

CHAPTER XIX

A JOYOUS RETURN

Keenly excited, the three boys instantly arose and advanced nearer the rim of the Gulch. Around the bend of the next great b.u.t.tress or projection they saw two forms moving slowly which they instantly recognized as men.

"That's Zeke and Thomas Jefferson!" exclaimed Grant in a low voice.

"What has become of the other two men?" inquired George.

"You'll have to ask them,--or Zeke and T.J.; perhaps they will be able to tell you something after they get back here."

Grant's surmise proved to be correct. Within a half-hour both Zeke and the Indian returned to the camp.

Neither was willing to describe the details of very much of his effort to overtake the two white men who had gone from the camp. It was manifest, however, that both white men had disappeared and that along with them had gone one of the packs, now doubly valuable in the eyes of the boys.

"Didn't you see the men anywhere, Zeke?" inquired Fred.

"Not a sign."

"Did you find out where they went?"

"Not exactly."

"What do you mean by that?"

"Why not seein' 'em, I'm not sure where they are nor where they went."

"But you think they went--"

"I'm not doin' very much 'thinkin'' just now," replied Zeke as he at once began his preparations for the evening meal.

Fred however, was not to be turned aside so easily.

Approaching the place where Zeke was working he said, "Do you think those men have tried to go to the place where Simon Moultrie staked his claim?"