Read it through once

It killed the old-fashioned keel-boating, by reducing the freight-trip to New Orleans to less than a week. The railroads have killed the steamboat passenger traffic by doing in two or three days what the steamboats consumed a week in doing; and the towing-fleets have killed the through-freight traffic by dragging six or seven steamer-loads of stuff down the river at a time, at an expense so trivial that steamboat competition was out of the question.