Annual Report on the Geological Survey of Pennsylvania, Volume 4; Volume 6

Allegheny mountain Allegheny river Alumina anticlinal axis band Bank base basin belt of limestone blue brown calcareous Carbonate cent Clarion county coal measures coal seam color compact Composition in 100 conglomerate deposite DESCRIPTION district east elevation excavations extends feet in thickness feet thick flank formation fossiliferous Franklin county furnace geological gneiss grey hills Huntingdon county insoluble matter Jack's mountain Juniata knob layers Lewistown lime limestone limestone F lower lying manganese metallic iron mica slate mile north miles south-west mill mineral mouth nearly Newton Hamilton north-east north-west side northern occupies occurs outcrop overlying oxide Peroxide of iron portion quarry range red sandstone red shale river sandstone Scrub ridge seam of coal shale Sideling hill Silica and insoluble slaty south-east southern specimen contains stone strata stratum structure summit surface Susquehanna synclinal synclinal axis thin three miles township trace Trough creek turnpike upper valley VIII Water Waynesburg