MUL-TAL-LA, the Blackfoot, performed some mental calculations that would have been creditable to Deerfoot, the Shawanoe.

Possessing a remarkable memory of places, he easily recalled the location of the pass which he and his companions had used when on their journey eastward. Naturally he planned to utilize it again on his return with his three friends. He did not forget that during his visit to Black Elk, on the former occasion, he had described the route by which he crossed the formidable mountain range. The Shoshone chieftain praised his skill and wisdom in making use of the pass, which he himself had traversed more than once.

It followed, therefore, that Black Elk would expect his old acquaintance to guide the youths over the same course. He had therefore signaled to the Shoshones in the mountains to cut off the little party, and the most promising place for that was in the pass which was familiar to both. Consequently, the prudent thing for Mul-tal-la to do was to mislead Black Elk as to his time of entering the pass.

It has been said that the entrance could be reached by the close of the afternoon, but the first intention of the Blackfoot was to camp at this entrance until the following morning, arranging to make the passage by daylight. You must not form the idea that when a mountain pass is referred to, it is in the nature of a road which can be followed without trouble and that few difficulties are met. The great South Pass through the Rockies is twenty miles wide in many places, and a party of emigrants have often entered and tramped it for a long way before learning they were journeying over an old route that has been used by thousands of persons in crossing the plains.

A mountain pass as understood in the West may be described as a means of getting across or through a range. It often involves steep climbing and descent, winding past wild and dangerous precipices, with the hardest work conceivable. It requires several days and sometimes a week or more to traverse. It has happened that a party, after penetrating to a long distance, has discovered that they have been following a blind path, and they are obliged to turn back and hunt for a new one. The most experienced mountaineers sometimes go astray. On one of Fremont’s exploring expeditions his guide lost his way and the most disastrous results followed. Many of the hardiest scouts and all of the mules froze to death, and the explorer himself had a narrow escape from a similar fate.

It would have been impossible for the two Blackfeet to find their way through the range had they been forced to depend upon themselves, but the trail had been used for years by hunters and wild animals, and was so clearly marked that, traveling only by daylight, it was easy to avoid going wrong.

Mul-tal-la explained the problem that confronted him, and the boys saw it was both difficult and dangerous. His plan was to press on till they arrived at the entrance to the pass, and then, instead of waiting until morning, do the utmost traveling possible by night. The Shoshones would not expect this. Therefore, if all went well, our friends would gain a good start and, by keeping it up as long as they could, might throw their enemies so far to the rear that they would be eluded. The Blackfoot thought they could reach the comparatively level country beyond at the end of three days, provided they made good use of the nights, which, you will remember, were partly lit by the moon, and provided also the weather continued fair.

“The smoke of this fire will tell Black Elk where we are,” remarked George Shelton, when they were about to resume their journey.

“Yes; had Mul-tal-la seen the signal of Black Elk the fire would not have been started, but it is too late now.”

“It seems to me,” said Victor, “that since you have located Black Elk and his party, the only thing left is to keep a lookout for the Shoshones in front.”

“My brother speaks the words of wisdom.”

“Thanks—and now, Mul-tal-la, why not go by that pass you have been talking about and take a new one through the mountains?”

The Blackfoot explained that that was the question he had been turning over in his mind, but the plan could not be followed, because he had no knowledge of any other path. There might be none, or, at best, he would have to spend a long time in hunting for it, and when found, they were likely to be turned back by obstructions of which they could know nothing until they faced them. The conclusion was therefore clear: they must use the old pass with which he was familiar.

But the Blackfoot had a little trick in mind, which he explained to his friends. They would select a camping site among the foothills near where they would have to make the change of route to enter the mountains. They would start another fire, whose smoke would give their enemies the impression that they had halted for the night. The Shoshones, following the rule of their race, were not likely to molest the travelers until the night was well advanced, and by that time Mul-tal-la hoped to be beyond reach. Care and skill and not a little good fortune were necessary to success, but the faithful guide was hopeful.

It took only a fraction of the time I have used for a full understanding to be reached by the Blackfoot and the boys. At the request of George Shelton, their friend retained the spyglass, while he and his brother depended upon their unaided eyesight. Mul-tal-la held his position a hundred yards, more or less, in advance, with the laden Zigzag plodding after and the brothers bringing up the rear. All were fortunate in one respect: none of the animals—omitting the previous accident to the horse Simon and later to Whirlwind—had fallen lame. This was fortunate when it is remembered that all were unshod and they had been obliged to pass more than one rough place. This good fortune could hardly be expected to continue, now that the hardest part of the journey thus far confronted them.

The course wound among the elevations and depressions, past boulders and rocks, with grass, trees and undergrowth continually obtruding, and with the rugged outlines of the mountains towering above the cloud line on their left. At varying distances the great peaks climbed far into the sky, their crests white with snow, and in some cases the fleecy clouds wrapped them about so closely that it was hard to tell where one ended and the other began.

Now and then a breath of icy air was wafted over the lads, and they involuntarily shivered. Then in the soft hush the weather for a time became oppressive. Up and down, to the right and left, in and out, the three pushed onward, making better progress than at any time for weeks before.

The guide gave the boys no attention, for none was necessary. They understood matters, and the part they had to play was simple. The Blackfoot could be seen now and then to check his horse and lift the instrument to his eye. While he gave his chief attention to the front, he did not neglect to scan every portion of his field of vision.

One fact puzzled the Blackfoot. Hours had passed since Black Elk sent his signal across the miles of coun............