Page:Historic highways of America (Volume 9).djvu/156

150 It appears then that the steamboat tonnage of the Mississippi Valley (1842) exceeded by forty thousand tons the entire steamboat tonnage of Great Britain (1834). In other words, the steamboat tonnage of Great Britain was only two-thirds that of the Mississippi Valley. The magnitude of this fact will be best appreciated by considering that the entire tonnage of the United States was but two-thirds that of Great Britain, showing that this proportion is exactly reversed in western steamboat trade. The influence of the West in pushing the steamboat to its ultimate use as a common carrier has been most remarkable.