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 France, did not reach the United States until July. Down to that time President Jefferson had no knowledge of the fact that his expedition, as planned, was to explore not French territory, but American. But when the news broke, he was all ready for it—he needed only to go ahead. That is one secret of success: to be prepared to step instantly from opportunity to opportunity as fast as they occur. The successful, energetic man is never surprised by the unexpected.

Captain Lewis had been kept very busy: studying science at Philadelphia, inspecting his flint-locks at Lancaster, storing them and gathering supplies at the arsenal of Harper's Ferry. June 20 he received his written instructions.

He was to ascend the Missouri River from St. Louis to its source, and by crossing the mountains and following down other streams, endeavor to come out at the mouth of the Columbia on the Pacific coast. It was hoped that he would find a way by water clear through. He was to make a complete record of his journey: noting the character of the country, its rivers, climate, soil, animals, products, and peoples; and particularly the Indians, their laws, languages, occupations—was to urge peace upon them, inform them of the greatness of the white United States, encourage them to sell us their goods and to visit us.

When he reached the Pacific Ocean, he was to ship two of his party by vessel, if he found one there, for the United States, by way of Cape Horn, of South