"Not all of them, of course," said the older man, "but you will find that their variety in experience is invaluable. You told me you were going to Alaska with Rivers later on. Now, if you have seen the Death Valley work as well as triangulation in the Grand Canyon and surveying in the Minnesota swamps, you will have a fair idea of the immense range of the work of the Survey." "It is a contrast, all right," said Roger. "From the flat, boggy country of Minnesota to the high dry peaks of the Canyon, and from the intense heat of the desert to the ice-bound ranges of Alaska is certainly quite a jump. But I'm very glad to have the chance, Mr. Masseth, though I shall be sorry to leave you and the rest of the party." That evening in camp, the chief announced his intention of returning to the far side of the Canyon, and stated that Roger would be left to send a heliograph message a couple of months later, and that in the meantime he would visit the Mohave country for a few weeks. "Why," commented the frontiersman, when this plan was unfolded, "I was figurin' myself how it mightn't be so worse an idea to prospect some in that Silverbow country, now that I'm 'way over here. My two boys are working a small claim of mine near Oak Springs Butte, an' I've a notion that there's a heap of gold in that Kawich country. Guess I'll go with you part of the way to Daggett, pard; that is, if you're agreeable." Nothing could have suited the boy better, and his exuberant delight in the prospect of his friend's presence throughout the long ride was obviously pleasing to the old man. "That's a go then, bub," he said; "if you want to stick to the old trail I'll help you keep it, and if you want to find a new one, why, I'll just follow right along." "But when are you going to break camp, Mr. Masseth?" asked the boy, who was growing a little tired of the continual reference to his crossing of the Canyon. "The day after to-morrow, I think," the chief of the party replied, "as the work should be done by that time; so you can start the same day, only in the opposite direction." In spite of Roger's interest in going to a new field, however, and though he had beside him his grizzled friend, one of the keenest twinges of loneliness the boy had felt while on the Survey came over him a couple of days later, as he saw the party which he had so long considered as his own, ride away from the site of the camp, leaving the frontiersman and himself looking after them. He would much have preferred being the first to start, but as the main party had to cross the Canyon, movement at the earliest dawn was necessary. One consolation he had in the possession of Duke, the chief's horse and a great favorite with the boy. As Roger and his friend started on their journey westward, the boy said: "You were speaking of some mines out this way. Do you own gold mines?" "No, bub, not gold. Wouldn't have 'em as a gift." "Why not?" asked the lad, surprised.