"That will never do!" smiled Dick. "Suppose you climb down and let Danny Grin take your place at the reins until the next halt. I suspect that Danny boy already has a few pebbles in his shoes, and that he'll be glad enough to look over the world from the driver's seat." "I'm willing to sacrifice myself for the good of the expedition, anyway," sighed Dalzell, as Harry drew rein. "Come down with you, Hazy, and begin to share the delights of this walking match!" The change of drivers made, Dick & Co. plodded on again. "It seems to me that we ought to put on more speed," suggested Dave Darrin. "Are you in a hurry to get somewhere, Darry?" drawled Tom Reade. "No," Dave replied, "but, if we're out for training, it seems to me that we had better do brisker walking than we're doing now, even if the horse can't keep up with us." "We're making about three miles and a half an hour," Dick responded. "But will that be work enough to make us as hard as nails?" persisted Darry. "We're getting over the ground as fast as the troops of the regular army usually travel," Prescott rejoined. "I believe our regulars are generally regarded as rather perfect specimens in the walking line. We might move along at a speed of six miles, and might keep it up for an hour. Then we'd be footsore, and all in. If the first hour didn't do it, the second hour would. But if we plug along in this deliberate fashion, and get over fifteen, eighteen or twenty miles a day, and keep it up, I don't believe any one of you fellows will complain, September first, that he isn't as hard and solid as he wants to be---even for bucking the football lines, of other high schools." "I know that I can be satisfied with this gait," murmured Reade. "If Darry wants to move faster," suggested Hazelton, "why not tell him where to wait for us, and let him gallop ahead?" "I'll stay with the rest of you," Darry retorted. "All I want to make sure of is that we're going to get the most out of our training work this summer." "I'll tell you what you might do, Dave, by way of extra exercise and hardening," offered Tom. "What?" asked Dave suspiciously. "I believe we're going to halt every hour for a brief rest" "Yes." "While the five of us are resting under the trees, Darry, you might climb the trees, swinging from limb to limb and leaping from tree to tree. Of course you'll select trees that are not directly over our heads." "Humph!" retorted Dave. "Try it, anyway," urged Tom, "it's fine exercise, even if you give it up after a while." "I'll try it as often as you do," Darrin agreed with a grin. Their second halt found the high school boys more than six miles from their starting point. On this trip they were not heading in the direction they had followed on their fishing trip. Instead, they were traveling in the opposite direction from Gridley, through a fairly populous farming region.