The greatest cave known on the globe is the Mammoth Cave of Kentucky, situated in Edmonson County, near the Green River, ninety-four miles from Louisville, and nine miles from Cave City, the station on the Louisville and Nashville Railway where passengers get off when they wish to visit the celebrated cavern. The Mammoth Cave is world-renowned: I have found that the people of every nation, even our antipodes, are acquainted with it, though that may be the only thing in America of which they have any clear apprehension. I question if there be any other natural curiosity half so well known as that. Never have I travelled in any domain inhabited by intelligent people, who had not only heard of it, but who did not have something like accurate information respecting its extent and peculiarities. Famous as it is, and easy of access, comparatively few of our countrymen have explored it. Indeed, the very ease of its access has prevented a great many persons from going there who would otherwise have gone. What we can do at any time we are not likely to do at all; for any time is really no time. I have met residents of Naples who had never ascended Vesuvius, or seen the ruins of Pompeii. I am acquainted with citizens of Schaffhausen who have never set eyes on the magnificent Rhine Falls. There are Parisians who have never been in the Louvre Gallery, or the Park of Versailles; Romans who have never stood before the Apollo, the Laocoön, or the Transfiguration; Athenians who have never been within the Parthenon; Cairines to whom the pyramids are a dream; denizens of St. Petersburg unacquainted with Moscow; Viennese ignorant of the Belvedere and Schönbrunn; Berlinese unfamiliar with Potsdam, and cultivated Londoners who have never made a pilgrimage to Stratford, to the tomb of the most wonderful genius the world has yet shown. It is not strange, therefore, that Kentuckians, liberal as their state vanity is, should often die without “doing” the Mammoth Cave. I remember how often I went within a few miles of the cave before I took the trouble to visit it, and that, finally, dissatisfied with myself for its long neglect, I made a special journey from New York to carry out my much deferred purpose. For several years a branch railway has been talked of from Cave City to the Cave; but it has never been built, needful as it is in the saving of time. Eighteen miles of coaching, in these rapid and driving days, appear to the average traveller considerable of a task; and when to this is added the two full days required for an exploration of the enormous cavern, it is easy to understand why so many persons refuse to examine the subterranean chamber lying along the Green River. [Sidenote: A SWINDLING MANAGEMENT.]