"Boys, I am very ill," said Captain Lewis, when they camped for dinner on the first day out. Attacked with violent pains and a high fever, unable to proceed, he lay under some willow boughs.

No medicine had been brought. Drouillard was much concerned. "I well remember," he said, "when a flux was epidemic at Chillicothe among de white settlers, my fader, Pierre Drouillard, administer on de sick wit' great success."

"What did he use?"

"A tea of de choke-cherry."

"Prepare me some," said the rapidly sinking Captain.

With deft fingers Drouillard stripped off the leaves of a choke-cherry bough, and cut up the twigs. Black and bitter, the tea was brought to Lewis at sunset. He drank a pint, and another pint an hour afterward. By ten o'clock the pain was gone, a gentle perspiration ensued, the fever abated, and by morning he was able to proceed.

The next day, June 12, the mountains loomed as never before, rising range on range until the distant peaks commingled with the clouds. Twenty-four hours later Lewis heard the roaring of a cataract, seven miles away, and saw its spray, a column of cloud lifted by the southwest wind. Like Hiawatha he had—

"Journeyed westward, westward,

Left the fleetest deer behind him,

Left the antelope and bison,