When the gates of the enclosure were at last shut upon the steam-horse, a broader and more congenial field of duty opened before him. From the rôle of dray-horse he passed to that of courser. Marvels from the ends of the earth he had, with many a pant and heave, forward pull and backward push, brought together and dumped in their allotted places. Now it became his task to bear the fiery cross over hill and dale and gather the clans, men, women and children. The London exhibition of 1851 had 6,170,000 visitors, and that of 1862 had 6,211,103. Paris in 1855 had 4,533,464, and in 1867, 10,200,000. Vienna's exhibition drew 7,254,867. The attendance at London on either occasion was barely double the number of her population. So it was with Paris at her first display, though she did much better subsequently. Vienna's was the greatest success of all, according to this test. The least of all, if we may take it into the list, was that of New York in 1853. Her people numbered about the same with the visitors to her Crystal Palace--600,000. Philadelphia's calculations went far beyond any of these figures, and she laid her plans accordingly. Some trainbands from Northern and Southern cities might give their patriotic furor the bizarre form of a march across country, but the millions, if they came at all, must come by rail, and the problem was to multiply the facilities far beyond any previous experience, while reconciling the maximum of safety, comfort and speed with a reduction of fares. The arrangements are still to be tested, and are no doubt open to modification. On one point, however, and this an essential one, we apprehend no grounds of complaint. There will be no crowding. The train is practically endless, the word _terminus_ being a misnomer for the circular system of tracks to which the station (six hundred and fifty by one hundred feet) at the main entrance of the grounds forms a tangent. The line of tourists is reeled off like their thread in the hands of Clotho, the iron shears that snip it at stated intervals being represented by the unmythical steam-engine. The same modern minister of the Fates has another shrine not far from the dome of Memorial Hall, where his acolytes are the officials of the Reading Railroad Company.