Return of captain Lewis. Account of captain Clarke's
researches with his exploring party. Perilous
situation of one of his party. Tansy river
described. The party still believing the southern
fork the Missouri, captain Lewis is resolves to
ascend it. Mode of making a place to deposit
provisions, called cache. Captain Lewis explores the
southern fork. Falls of the Missouri discovered,
which ascertains the question. Romantic scenery of
the surrounding country. Narrow escape of captain
Lewis. The main body under captain Clarke approach
within five miles of the falls, and prepare for
making a portage over the rapids. 251