Simon Moultrie. The bones were found July 13, 1914, by Fred Button, John Clemens and Zeke Rattray."

"Don't you think," inquired John, "that I had better put our addresses on this paper too?"

"Good scheme," replied Fred.

Accordingly the permanent address of each member of the party was added to the brief statement.

"Do you suppose we'll ever hear from anybody?" inquired John in a low voice.

"I don't know," answered Fred, shaking his head as he spoke. "It's one of those things you never can tell about."

Fred Button was one of the four boys who among their friends and themselves, for the matter of that, were commonly known as the Go Ahead Boys. They were schoolmates and classmates and were nearly of the same age, John being the only one who was eighteen, while his three companions were each seventeen years old.

In various parts of their country they had been spending their recent vacations together. The list of books given at the beginning of this story will indicate the various parts of the country in which they had met their adventures.

At the present time, however, when this story opens, they were nearly two thousand miles from home.

Across the continent they had journeyed together and together also they had spent ten days viewing the wonders of the Grand Canyon of the Colorado. The apparently perilous ride on the backs of donkeys down Bright Angel Trail had been greatly enjoyed, as well as certain other inspiring expeditions which the boys had made, sometimes in company with others and sometimes with a single guide for the quartet.

So enthusiastic had the young travelers become over their experiences that at last they had obtained the consent of their parents to make an expedition of their own. Two guides were secured who were familiar with the entire region and two strong skiffs were purchased. In these boats the boys had planned to follow a part of the dangerous Colorado River. They had no desire to incur the perils that belonged to many of its swirling rapids and tossing waters. In other places, however, the river was comparatively safe and there the boys planned to follow the course of the stream with their strong and heavy little boats.

Inasmuch as Fred's father was a prominent railway official he had obtained for the boys certain privileges which otherwise they might not have had. Fred himself was the most enthusiastic member of the party. Shorter than any of his comrades his weight was still nearly as great as any of the four. His solid, sturdy little frame was capable of great endurance and there were few experiences he enjoyed more than tiring his long, lanky comrade John, who as one of his friends brutally expressed it was as much too tall as Fred was too short.

Out of consideration for Fred's physique, among his friends he was known as Pigmy and Pee Wee, the former title sometimes being shortened into Pyg.

John, however, rejoiced in his name, or if he did not rejoice, at least was accustomed to respond to the appellation, String.

The remaining members of the little band were George Washington Sanders, one of the most popular boys in the school in which all four were students. Frequently he was referred to as Pop, a distinction by which his friends indirectly expressed their admiration for one who was laughingly referred to as the "Papa of his Land," just as the great man for whom he was named was the "Father of his Country."

Grant was the member of the Go Ahead Boys who easily led in whatever he attempted. In the hundred yards dash he had established the record of the school. His standing in scholarship was high, while his fund of general information was so extensive that he had received the appellation, Socrates. This nickname, however, recently had been shortened by the time-saving lads and Grant was more frequently called Soc than by the name which his parents had given him. His ability as an athlete was scarcely less than his success in the classroom. And yet Grant by no means was one who withdrew from out-of-door life, or enjoyed less than his friends the stirring adventures in which they all had shared.

Zeke Rattray, the guide, was a tall, bronzed, powerful young fellow about twenty-five years of age. For several years he had dwelt in the region, serving as guide for various exploring parties or prospectors. The Go Ahead Boys had smiled incredulously when Zeke had informed them that when he came originally to the state because he was expected to die "back east," (in Iowa) of tuberculosis. "I weighed just one hundred and nineteen pounds when I landed out here," he explained, and then as he stood erect and threw back his powerful shoulders his young companions laughed. It did not seem possible that the strapping young giant, who now weighed at least two hundred pounds, ever had been reduced to such a condition as he described.

The immense strength of Zeke had never impressed the Go Ahead Boys more than when he finished his simple task of interring the bones which had been discovered by Fred and John.

"If I should meet him on the street alone," whispered Fred to John, "I should kindly give him the whole sidewalk. I believe that he could do what Grant says he can. Just look at those hands."

"What does Grant say he can do?"

"Why he declares that Zeke can bend the barrel of a rifle."

CHAPTER II

A CLUE

The thoughts of the two boys speedily were withdrawn from the physical prowess of their guide. At that moment he had again taken the little book he had found in the pocket of the coat of the dead man, and, opening it, said, "I'm not sure, boys, whether this man was Simon Moultrie or not. It sounds just like him, but there's so little writing that I can't tell."

"What does it say?" inquired John eagerly.

"Why, it's a diary. Some days he didn't write anything and other days when he did write, the pages are torn and the writing is so blurred that no one can make out what he means."

"Let me see it," said Fred, extending his hand as he spoke.

Taking the little book Fred saw that it apparently was a diary as Zeke had suggested. It was for the year 1914. One entry was quite distinct wherein the unfortunate man had recorded the story of his journey to Tombstone for fresh supplies.

When he commented upon this fact, Zeke said, "That's what makes me think it might have been Simon. As I said to you he only came in twice each year and then stayed just long enough to get supplies to last him for the next six months. Of course he may have come in when I didn't know anything about it."

"When did be make his trips?" inquired Fred.

"Usually about October and. April He didn't like to lose much time from his prospecting so he would come in just about the time the snow was gone and get fitted out for his work that summer."

"If he wont in last April," suggested John, "he must have lost some of his supplies."

"Nobody knows just where he made his head quarters. It's more'n likely though that the coyotes, if they could talk, might be able to tell you more about what became of old Simon's bacon than any living man could."

"Here's something!" exclaimed Fred excitedly. "This is worth while," he added, after he had looked carefully through the various pages of the diary and in the back part of the book, distinct from the numbered pages, he had found the following entry:

"June 1st.