a small Athabaskan tribe which had long been under the protection of the Blackfeet, as I learned later.

That evening I asked Antoine many questions about what I had seen, only to find that he could not answer them. Nor could any of the employees. Through the open doorway between the cook-room and his quarters the factor heard my futile questioning and called to me. I went in. He had me close the door, and then asked me a question that made me gasp.

CHAPTER II
THE SUN-GLASS

"How would you like to travel about with the Pi-kun-i for a time, and learn their language?"

I could only stare at him, hardly believing my ears, and he added: "I am sure that you would be in no more danger than you are here in the fort, or I would not propose this."

"I would rather do it than anything else! It is just what I want to do!" I told him.

"Let me explain the situation to you fully," he went on. "But, first, did you ever hear of Lewis and Clark?

"No? Well, they are two American Army officers who, a few years ago, led an expedition from the Mississippi River up the Missouri River to its head in the Rocky Mountains, and thence down the waters of the Oregon to its confluence with the Pacific Ocean. They were the first white men ever to see the country at the headwaters of the Missouri, and between it and the ocean. Now, in the dispatches that came to me with the goods, yesterday, I received most disturbing news: Following the trail of Lewis and Clark, our rival, the American Fur Company, is pushing westward and establishing posts on the Missouri, the upper part of which is in our own territory. I am ordered to learn if it has entered our territory, and if so, to take steps to block its trade with our Blackfoot tribes. The Pi-kun-i are going south to the Missouri plains for the summer as soon as they finish their trade with us, and I want you to go with them, and, while learning their language, keep an eye out for our rivals. I can't trust Antoine to do this, and anyhow he will never become a good interpreter. I believe that you will soon master the language."

Of course the factor was mistaken. The Missouri River country was not in our territory. We were to learn that later. Nor did we then have any idea of the vast extent of the hunting-ground of the Blackfeet. It was for me to discover that it extended from the Saskatchewan, yes, even from the Slave Lakes, south to their Elk River of the South, which is the Yellowstone River of the whites, and from the Rocky Mountains eastward for an average width of more than three hundred miles. A part of it, from the tributaries of the Missouri south, had been Crow country, but the Blackfeet had driven them from it. The Pi-kun-i, with their allies, the Ut-se-na, or Gros Ventres, lived for the greater part of the time in the southern part of it, along the Missouri and its northern and southern tributaries, and the other two tribes, with their Athabaskans, the Sak-sis, liked best the plains of the Saskatchewan and its tributaries.

Before the advent of the horse the Blackfeet tribes had all lived in the Slave Lake country. The Crees had so named these great bodies of water, for the reason that in that far-away time the Blackfeet made slaves of the enemies they captured. As nearly as I could learn, it was between 1680 and 1700 when the Blackfeet began to obtain horses by raids far to the south, even to Old Mexico, and in 1741 or 1742 obtained a few guns from the post on the Assiniboine River founded by the Sieur de la Vérendrie, that unfortunate explorer who was the first white man to see the Rocky, or as he named them, the Shining, Mountains. With both guns and horses, the Blackfeet were not long in taking possession of the rich game country to the south of the Slave Lakes, and driving from it not only the Crows, but other tribes as well.

On the day after my talk with the factor, he had an interview with Lone Walker, head chief of the Pi-kun-i, to which I was an interested listener. It was agreed, as well as Antoine could explain the matter, that I was to travel south in his care, living in his lodge, and riding his horses, and that upon bringing me safe back to the fort when he and his tribes returned to trade, he should be given a gun, two blankets, and two lengths of twist tobacco. Rich presents, indeed! More than enough, as the factor said, to insure his taking the greatest care of me. And anyhow my heart went out to the chief. Tall, dignified in bearing, his handsome face and eyes expressive of a kind and honest nature, I felt from the start that he would be a good friend to me, and I was not mistaken. I little realized at that time, however, what a really great man he was with his people.

Owing to their desire to start south at once, the Pi-kun-i were the first to trade in their take of furs. They were a matter of ten or twelve days doing it, and in the meantime I kept pretty close in the trade-room listening to Antoine's interpretations of their needs, and memorizing the words. In that way I learned their names for the different trade articles, and a few helpful sentences as well, such as the equivalent in their language for "What is it?" "Where is it?" "What is it named?" and so on. And then, one day, I saw Antoine's wife sitting with a Sak-si woman, the two apparently conversing with one another by means of signs. I asked Antoine about it and learned that it was the sign language, used by all the tribes of the plains; that almost anything could be told by it, even stories, and that his wife understood it very well.

"Then why don't you learn it? Would it not be of great help in your interpreting?" the factor asked him.

"I am try! I am do my possible! Sare, honneur, my han's, my fingare, he is not queek to do it!" he answered.

"Huh! Antoine, you're a fool! Yes, and so am I, or I would have known about this sign language, and have learned it long since!" the factor exclaimed.

"My woman, she will teach it to you; I will help," Antoine volunteered.

We began lessons with her that very evening, and before I left I had pretty well learned it. The signs are invariably so significant of the thought to be expressed, that, once seen and understood, they are not easily forgotten. I know not where the sign language originated, but I think that it came to the people of the plains from Mexico, spreading from one tribe to another until it finally reached the Blackfeet. The tribes of the forests, and of the two coasts, and the Great Lakes, knew it not.

At last the morning came upon which the Pi-kun-i were to break camp. On the evening before Lone Walker had sent my outfit of things over to his lodge, ready to be put upon one of his pack horses, and now, leading a horse for me, he came to the fort with his under-chiefs for a farewell meal and smoke with the factor.

I hastily ate my morning meat and, while the smoking was going on, saddled and bridled the horse. The factor had given me his own light, English, hunting-saddle, and I thought it a very comfortable one to ride upon. Later, when I got from a warrior a Spanish saddle that he had taken in a raid far to the south, I learned what comfort in riding really was!

The horse saddled, I said good-bye to the men. The voyageurs with whom I had come to the fort were soon to load the boats with furs and return to York Factory, and eventually Montreal, and I handed the head man a letter for my mother, telling her of my safe arrival at the fort, of the thousands of wild