Exhilaration seized the men, as they sent the boats up the heavy current that rolled well-deep below. That night they camped in a canyon that is to-day a pleasure resort for the people of Helena.

Again following the Indian trail, on the 25th of July Clark arrived at the three forks of the Missouri, near the present site of Gallatin. From the forks of the far eastern rivers where Pittsburg rises, they had come to the forks of the great river of the West.

For days the swift current had required the utmost exertion. The men complained of fatigue and excessive heat.

"You push a tolerable good pole," said the Kentuckians, when Lewis took a hand.

Captain Clark was worn out. With the thermometer at ninety, for days he had pushed ahead, determined to find the Shoshones.

"Let us rest a day or two," said Captain Lewis. "Here, boys, build a bower for Captain Clark. I'll take a tramp myself in a few days to find these yellow gentlemen if possible."

Camping at the three forks, every man became a leather dresser and tailor, fixing up his buckskin clothes. Leggings and moccasins had been sliced to pieces by the prickly pear.

"What a spot for a trading post!" the Captains agreed.

"Look," said Lewis, "see the rushes in the bottom, high as a man's breast and thick as wheat. This will be much in favour of an establishment here,—the cane is one of the best winter pastures for cows and horses."

From the heights at the three forks, Lewis and Clark looked out upon valleys of perennial green. Birds of beautiful plumage and thrilling song appeared on every hand. Beaver, otter, muskrat, sported in this trapper's paradise. Buffalo-clover, sunflowers and wild rye, buffalo-peas and buffalo-beans blossomed everywhere.