Here, too, a vanished race once had had a city or perhaps a capital, for Cincinnati is built upon extensive prehistoric ruins of the Mound Builders. It was a walled city with great gates, pyramids and sacrificial altars, and over these surviving memorials of a people whose origin and destiny are alike a mystery grew, when Cincinnati was founded, oak, beech, sycamore and cedar, whose concentric rings revealed that hundreds of years had elapsed since the disappearance of the race which had reared these shrines and tombs and city walls. Among the prehistoric pottery, the polished pipes of catlinite and stone axes such as a race of troglodytes might have swung to brain abhorrent monsters of forgotten periods, they will show you in the artistic Cincinnati Museum in Eden Park, the famed Cincinnati Tablet exhumed from a tumulus near Fifth and Mound streets in that city. Some antiquarians believe the sculptured stone to be an astronomical calendar or a table of measurement and calculation. Some have imagined it to be a sacred relic from the tomb of kings. Nearby, in the same museum, you see records lucidly deciphered from the second Theban dynasty, and carved inscriptions, intelligently translated, from the balustrade of the temple of Athene, but scholarship is dumb and imagination is the only interpreter of these strange mementos of a race which found in the site of Cincinnati a natural spot for the building of a large and fortified city. Although the star of empire may have been destined at all hazards to pause over Cincinnati until the tenth census of the United States should show that the center of the nation's population had moved westward to that city, there was grave alarm in the settlement when the soldiers of St. Clair arrived in confusion and defeat. [Illustration ENTRANCE TO SPRING GROVE CEMETERY.]