hundred of these mounds, it is stated, may be enumerated within seven miles of St. Louis, their altitude varying from ten to sixty feet, with a circumference at the base of about as many yards. One of these, nearly in the centre of the first collection, is remarked as considerably larger than those around, and from its summit is commanded an extensive view of the scene. The group embraces, perhaps, fifty tumuli, sweeping off from opposite the city to the northeast, in form of a crescent, parallel to the river, and at a distance from it of about one mile: they extend about the same distance, and a belt of forest alone obstructs their view from the city. When this is removed, and the prairie is under cultivation, the scene laid open must be beautiful. The outline of the mounds is ordinarily that of a gracefully-rounded cone of varying declivity, though often the form is oblong, approaching the rectangle or ellipse. In some instances {157} they are perfectly square, with a level area upon the summit sufficient for a dwelling and the necessary purlieus. Most of them are clothed with dense thickets and the coarse grass of the bottom; while here and there stands out an aged oak, rooted in the mould, tossing its green head proudly to the breeze, its rough bark shaggy with moss, and the pensile parasite flaunting from its branches. Some few of the tumuli, however, are quite naked, and present a rounded, beautiful surface from the surrounding plain. At this point, about half a mile from the river-bank, commencing with the first group of mounds, extends the railroad across the bottom to the bluffs. The expense of this work was considerable. It crosses a lake, into the bed of which piles were forced a depth of ninety feet before a foundation for the tracks sufficiently firm could be obtained. Coal is transported to St. Louis upon this railway direct from the mines; and the beneficial effects to be anticipated from it in other respects are very great. A town called _Pittsburg_ has been laid out at the foot of the coal bluffs.[127]