"of the Pottsville Another iron coal seam here, about 20 inches thick has many minute impure layers of coal that stand out on the fractured surface. Travel across the trail the coal appears and disappears suddenly but on close inspection the top while changing evidently has about one inch of bituminous shale and then the olive green shale. Below the coal also comes in suddenly, but at irregular intervals for six inches one sees streaks of coal. The greenish shale above the coal is about 8" to 4" thick, only layers of hard encrustedly peatery concretions, then a mass of crushed sandstone. Lyons Pottsville Great thickness of sandstone. Olive greenish shale 8" to 4" coal 20 inches. The one described above. The coal rests on erosion line as plain as the one drawn above. Also took a time exposure of it but the day is very dark and probably will be no good. Farther to the right the shale is again conformable underneath the coal.