"I know who it is whom you mean," said Albert earnestly, "and I intend to read about him and all the others. It's likely, Dick, before another year is past, that you and I will become about the finest historians of our country to be found anywhere between the Atlantic and Pacific. Maybe this is the greatest treasure of all that the wagon has yielded up to us."

Albert was right. A single volume, where no other could be obtained, was a precious treasure to them, and it made many an evening pass pleasantly that would otherwise have been dull. They liked especially to linger over the hardships of the borderers and of their countrymen in war, because they found so many parallels to their own case, and the reading always brought them new courage and energy.

They spent the next month after the completion of the canoe in making all kinds of traps, including some huge dead falls for grizzly bear and silver tip.

They intended as soon as the autumn opened to begin their fur operations on a much larger scale than those of the year before. Numerous excursions into the surrounding mountains showed abundant signs of game and no signs of an invader, and they calculated that if all went well they would have stored safely by next spring at least twenty thousand dollars' worth of furs.

The summer passed pleasantly for both, being filled with work in which they took a great interest, and hence a great pleasure. They found another rock cavity, which they fitted up like the first in anticipation of an auspicious trapping season.

"They say, 'don't put all your eggs in one basket,'" said Albert, "and so we won't put all our furs in one cave. The Sioux may come sometime or other, and even if they should get our three residences, Castle Howard, the Annex, and the Suburban Villa, and all that is in them, they are pretty sure to miss our caves and our furs."

"Of course some Indians must know of this valley," said Dick, "and most likely it's the Sioux. Perhaps none ever wander in here now, because they're at war with our people and are using all their forces on the plains."

Albert thought it likely, and both Dick and he had moments when they wondered greatly what was occurring in the world without. But, on the whole, they were not troubled much by the affairs of the rest of the universe.

Traps, house building, and curing food occupied them throughout the summer. Once the days were very hot in the valley, which served as a focus for the rays of the sun, but it was invariably cool, often cold, at night. They slept usually under a tent, or sometimes, on their longer expeditions in that direction, at the bark hut. Dick made a point of this, as he resolved that Albert should have no relapse. He could not see any danger of such a catastrophe, but he felt that another year of absolutely fresh and pure mountain air, breathed both night and day, would put his brother beyond all possible danger.

The life that both led even in the summer was thoroughly hardening. They bathed every morning, if in the tent by Castle Howard, in the torrent, the waters of which were always icy, flowing as they did from melting snows on the highest peaks. They swam often in the lake, which was also cold always, and at one of the hot springs they hollowed out a pool, where they could take a hot bath whenever they needed it.