But during the generation following, each of these commonwealths became absorbed in internal improvements. Ohio, for instance, between 1819 and 1844, built seven hundred and sixty-five miles of canals costing nearly ten millions and almost as many miles of turnpike at a cost of four millions. Ohio also built seventy miles of railway, and in 1836 began to improve her most valuable river, the Muskingum, for slack-water navigation. Thus there was reason enough why Ohio could not undertake the improvement of the Ohio River. Her sister states were equally engaged with internal affairs, and though some steps were taken toward surveying the Ohio along the shores of several states the matter was left, as should have been the case, to the general Government.
This meant a long delay, but at last, in 1825, the great work was undertaken; since 1836 there has been a continual struggle to compel the Government to do its duty by the Ohio River and its great commerce. In 1837 the Government commenced a system of surveys and an improvement of the low-water channels by means of riprap
