Lascelles.”

“And yet,” observed Dick, thoughtfully, “when I think of the wonderful things we have seen, and what a glorious chance we have of setting eyes on the great Pacific Ocean next summer, I am glad we decided to stay up here on this strange river of the wilderness that in the Indian tongue means Yellowstone.”

“It is a different stream from the ‘Big Muddy’ or the Missouri, and as full of rapids as it can be. Before long the expedition will have to abandon all boats, and trust to the horses to carry the camp outfit over the mountains to the west.”

“Listen, Roger, what was that sound?”

“I thought it was the whinny of a horse,” replied the impetuous one of the pair, as they dropped behind some brush that grew on the brow of a gradual slope leading to a lower level.

“And it came from below us, too. What could a horse be doing here? Do you think any of our men are out after fresh meat to-day?”

“There are a few horses among some of the Indian tribes around here, and it might be—there, look, something is coming yonder, Dick!”

“Don’t move again, Roger; it is an Indian brave, and there follows another, treading in his trail.”

“They are not of our friends, the Mandans, Dick, and they don’t look like the Sioux we met a while ago. There come three more, and now I can see the horse!”

“H’sh! Not a whisper now, and lie as still as a rock. They have sharp eyes, even if they are not on the warpath.”

Roger knew why his cousin made this last remark, for the horse was dragging two poles after him, the ends of which trailed on the ground. Upon this primitive wagon rested quite a pile of stuff, evidently the skin teepee of the family and other articles, as well as a buxom squaw and a small papoose.

Back of the first horse came a second, similarly equipped, and then another tall, half-naked brave, armed with bow and arrows. Dick knew that the little procession was a portion of some Indian community moving their camp to a place where the game would be more abundant, for this was the season when they laid in their winter store of jerked venison or “pemmican.”

“Don’t move yet, Roger,” whispered Dick, after the last figure had gone some little distance along the trail; “I believe there is another party coming. Yes, I can already see them a little way back there. Just crouch down and watch.”

While the two boys are lying hidden, and waiting for the passage of the hostile Indians, belonging to some tribe with which they hitherto had had no dealings, we might take advantage of the opportunity to ascertain just who Dick and Roger Armstrong are, and what they could be doing in this unknown region, far back in 1804, when the headwaters of the Missouri had never been fully explored by any white man.

Many years previous to this time their grandfather, David Armstrong, had emigrated from Virginia to the banks of the Ohio, being tempted to take this step because of wonderful stories concerning that country told to him by his good friend, the famous pioneer, Daniel Boone.

His family consisted of three children, a girl and two boys, Bob and Sandy. The brothers grew up versed in woods lore, as did all border boys. They knew all about the secrets of the great forest and the mighty waters. And, indeed, in those days, with peril constantly hovering over their heads, it was essential that boys should learn how to handle a rifle as soon as they could lift one of the long-barreled weapons to their shoulder.[1]

Later, the pioneer was tempted to continue still further into the Golden West, always with the rainbow of promise luring him onward toward the setting sun. With other families, the Armstrongs drifted down the beautiful Ohio, and finally settled on the Missouri, above the trading post of St. Louis.

Here the two sturdy lads grew to manhood, married, and built cabins of their own, near that of old David and his wife. To Bob came two boys, Dick and Sam; while his brother had a son, Roger, and a sweet girl named Mary, after her grandmother.

These two cousins, Dick and Roger, hunted in company, and were as fond of one another as their fathers had been. Dick was a little the older, and acted as a sort of safety valve upon the more impulsive Roger; but both learned the lessons of Nature, day by day, until, at the time we make their acquaintance in this volume, they were capable of meeting the craftiness of the Indian, or the fury of the forest wild beast, with equal cunning.

On the previous spring there had fallen a bombshell into the happy homes of the Armstrongs near the thriving settlement named after the French king. When David, on his arrival years before, had purchased a large section of land that was bound to grow very valuable for his heirs in later years, he had believed his title to be clear and unquestioned.

Later, it turned out that a certain signature was lacking to make the title valid, and unless this could be obtained within a certain time from an heir of the original owners, the entire tract would be taken from them. An unscrupulous French trader, named François Lascelles, had secured the opposing claim, and threatened to evict the Armstrongs in the coming spring, unless they could produce that valuable signature.

This impending family trouble affected Dick and Roger greatly. They began to make investigations and learned that the man whose signature was wanted, Jasper Williams by name, a hunter and trapper, was then far away in the unknown regions of the West.

They also learned that this forest ranger expected to join an exploring party headed by two men who had recently been in St. Louis, and whom they had met in company with their grandfather, David Armstrong. These were Captain Lewis and Captain Clark, sent out by the President of the United States to learn what lay far beyond the Mississippi Valley, and possibly to proceed all the way to the Pacific Ocean, which was known to lie hundreds, perhaps thousands of miles west of the Mississippi Valley. (Note 1.)[2]

So, determined to do everything in their power to get that paper signed by the one man whose name would save their homes, Dick and Roger had finally gained the consent of their parents to their making the perilous trip.

Many weary weeks the boys followed after the expedition, which had had quite a start ahead of them. They met with strange vicissitudes and wonderful adventures by the way, yet through it all their courage and grim determination carried them safely, so that in the end they finally reached the little company of bold spirits forging ahead through this unknown land.[3]

They were received with kindness by the two captains, who admired the spirit that had brought these lads through so many difficulties.

In the end the valuable signature was attached to the paper, which was placed in charge of a special messenger whom Captain Lewis was sending, with two other men, to carry reports of the progress of the