P. lyra is one large P. latreillta. Jenn were pleased with the day's work and all the horizons go into the Mississippian basin. They have nothing to do with the Cumberland basin. Oct 2 Thursday. Ben Hur, Va. Being over the same section I see that the Sheld. is deeply eroded and must lie in the creek below. Just beyond the Clinton exposures across the creek one sees a light Haell stone cut. This is the Chattanooga shale of more than 150 feet thick. Then follows a sandstone with rarely some pebbles and occasionally a layer with pieces of the Chattanooga black shale. Following south along the railroad in four miles more one sees a number of small cuts through light Hael gamy shales and whitish soft sandstones. These lie beneath the Chattanooga and above the Clinton, and seem therefore to be the Helderbergians. If this is true the lithologic nature is different from that of any other Set. There then is one chert and one fossils.