The
Ica or
Putumayo, one of the tributaries of the
Amazon river, west of and parallel to the
Yapura, was found more agreeable to navigate by
Jules Crevaux[?]. He ascended it in a steamer drawing 6 feet of water, and running day and night. He reached
Cuemby[?], 800 miles above its mouth, without finding a single rapid. Cuemby is only 200 miles from the
Pacific Ocean, in a straight line, passing through the
town of
Pasto[?] in southern
Colombia. There was not a stone to be seen up to the base of the
Andes; the river banks were of argillaceous earth and the bottom of fine sand.