As befits a nineteenth century institution, the railroad dates from 1801. In that year Benjamin Outram built in the suburbs of London a short line of horse railroad--or tramroad, as it was named in honor of the inventor. Other works of the same kind followed in almost every succeeding year. They were recognized as a decided convenience, but nothing more. It was hard to imagine that a revolution in the world's transportation methods could grow out of this beginning. Least of all could such a result be foreseen in England, whose admirable canal system seemed likely to defy competition for centuries to come. And yet, curiously enough, it was a man wholly identified with canal business who first foresaw the future importance of the railroad. The Duke of Bridgewater had built canals when they were regarded as a hazardous speculation; but they proved a success, and in the early years of the century he was reaping a rich reward for his foresight. One of his fellow-shareholders took occasion to congratulate the Duke on the fact that their property was now the surest monopoly in the land, and was startled by the reply, "I see mischief in these--tramroads." The prophecy is all the more striking as coming from an enemy. Like Balaam, the Duke of Bridgewater had a pecuniary interest in cursing, but was so good a prophet that he had to tell the truth in spite of himself, even though his curse was thereby turned into a blessing. It is hardly necessary to tell in detail how this prediction was realized. Thanks to the skill and perseverance of George Stephenson, the difficulties in the use of steam as a mode of propulsion were rapidly overcome. What was a doubtful experiment as late as 1815 had become an accomplished fact in 1830. The successful working of the Liverpool & Manchester Railway gave an impulse to similar enterprises all over the world. In 1835 there were 1,600 miles of railroad in operation--more than half of it in the United States. In 1845 the length of the world's railroads had increased to more than 10,000 miles; in 1855 it was 41,000 miles; in 1865, 90,000; in 1875, 185,000; in 1885, over 300,000.