All that morning Glen's attention was claimed by Mr. Hobart, or "Billy" Brackett, or somebody else, who wished to learn more of the details of his recent experience; but late in the afternoon he found himself riding beside Binney Gibbs. For the first time in their lives the two boys held a long and earnest conversation. From it each learned of good qualities in the other that he had never before suspected; and by it a long step was taken towards the cementing of a friendship between them.

So engaged were they in this talk, that the animals they were riding were allowed insensibly to slacken their pace, until they had fallen a considerable distance behind the train. They even stopped to snatch an occasional mouthful of grass from the wayside, without opposition on the part of their young riders. These knew that, whenever they chose, a sharp gallop of a minute or two would place them alongside of the wagons, and so they carelessly permitted the distance between them and the train to become much greater than it should have been.

Suddenly a dazzling ray of light flashed, for the fraction of a second, full in Glen's eyes, causing him to start, as though a pistol had been fired close beside him. He glanced hurriedly about. Not a wagon was in sight; but he knew the train must be just over the rise of ground he and Binney were ascending. At that same moment the mule threw up its head and sniffed the air uneasily. Glen's second glance was behind him, and it revealed a sight that, for an instant, stopped the beating of his heart. The whole country seemed alive with Indians.

Half a mile in the rear, hundreds of them, in a dense body, were advancing at the full speed of their ponies. A small party, evidently of scouts, were coming down the slope of a divide at one side, in the direction of the mirror-flash that had first attracted his attention. But the worst danger of all lay in two fierce-looking warriors who had advanced upon the boys so silently and rapidly that they were already within bow-shot.

Fortunately, Glen was close beside his companion. With a quick movement he grasped Binney by the collar and jerked him to one side, so that he very nearly fell off his mule. At the same instant the two arrows, that he had seen fitted to their bowstrings, whizzed harmlessly over the boys' heads. As Nettle and the mule sprang away up the slope, several rifle-balls, from the little party of Indians on the right, whistled past them; while from behind them rose a howl of mingled rage and disappointment. The first two Indians had used the noiseless arrows, in the hope of killing the boys without betraying their presence to the rest of the party, as the moment for the grand charge, that they hoped would be such a complete and overwhelming surprise, had not yet arrived. Now that they had failed in this, there was no longer any need for caution, and they fired shot after shot from their rifles after the fugitives.

Glen had seen the Cheyennes dodge from side to side, as they rode away from the stage-ranch three days before, to disconcert the aim of its defenders; and now he and Binney employed the same device.

Nettle was so much fleeter than the mule that Glen could have gained the top of the slope in advance of his companion if he had so chosen; but he rather chose to be a little behind him at this point. So, instead of urging the mare to do her best, he faced about in his saddle and returned the rifle-shots of the two Indians who were nearest, until his magazine was emptied. It is not likely that any of his shots took effect; but they certainly weakened the ardor of the pursuit, and gave Binney Gibbs a chance to cross the ridge in safety, which he probably could not have done had not Glen held those Indians in momentary check.

With his last shot expended, and no chance to reload, it was evidently high time for Glen to test the speed of his mare to its utmost. His life depended wholly on her now, and he knew it. There would be no taking of prisoners this time. Even at this critical moment he reflected grimly, and with a certain satisfaction, upon the difficulty the Indians would find in getting a scalp off of his shaven head.

All this riding and shooting and thinking had been done so rapidly that it was not two minutes from the time of that first tell-tale mirror-flash before Nettle had borne her rider to the top of the ridge, and he could see the wagon-train, not a quarter of a mile from him.

Binney Gibbs was already half-way to it; and, as Glen caught sight of him, he was amazed at a most extraordinary performance. Binney suddenly flew from his saddle, not over his mule's head, as though the animal had flung him, but sideways, as though he had jumped. Whether he left the saddle of his own accord or was flung from it the effect was the same; and the next instant he was sprawling at full length on the soft grass, while the mule, relieved of his weight, was making better time than ever towards the wagons.