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anticlinal axis Barren Measure basin Beaver township bench Big Run Brockwayville Brookville Brookville coal clay Clover township Coal Measures Concealed strata Conglomerate corner crosses deposit east Elk run exposed exposures Falls Creek farm feet thick Ferriferous limestone Freeport group Freeport lower coal Freeport Sandstone Freeport upper coal Freeport upper limestone hill hilltop Homewood Sandstone horizon Indiana county Interval Jefferson county Johnstown Cement Kittanning group Kittanning lower coal Kittanning middle coal Knox township lime Little Toby Lower Barren lower coal bed Mahoning creek Mahoning Sandstone massive McCreath Mercer group Mill creek mined mouth nearly northeast northwest once opened Perrysville Pine Creek township postage Punxsutawney quarry ravine Red Bank Red Bank creek region Report of Progress Reynoldsville rise road rock roof Sandy Lick creek shales shows side slopes southeast southwest stratum stream surface synclinal thence uplands valley water level Waynesburg Winslow township Worthville
Page 220 - REPORT OF PROGRESS IN THE CAMBRIA AND SOMERSET DISTRICT OF THE BITUMINOUS COAL FIELDS of Western Pennsylvania — 1875. By F. and WG Platt. Pp. 194, illustrated with 84 wood-cuts and 4 maps and sections. Part I. Cambria. Price, $1 00 ; postage, $0 12.
Page 221 - Price in cloth, $0 65 ; postage, $0 18. N. REPORT OF PROGRESS — 1875-6-7. Two hundred Tables of Elevation above tide level of the Railroad Stations, Summits and Tunnels ; Canal Locks and Dams, River Riffles, &c., in and around Pennsylvania ; with map ; pp. 279. By Charles Allen. Price, $0 70 ; postage, $0 15. O. CATALOGUE OF THE GEOLOGICAL MUSUEM— 1874-5-6-7. By Charles E. Hall. Part I. Collection of Rock Specimens. Nos. 1 to 4,264.
Page 221 - REPORT OF PROGRESS IN THE FAYETTE AND WESTMORELAND DISTRICT OF THE BITUMINOUS COAL FIELDS OF WESTERN PENNSYLVANIA — 1876. By JJ Stevenson ; pp. 437, illustrated by 50 wood-cuts and 3 county maps, colored. Part I. Eastern Allegheny County, and Fayette and Westmoreland Counties, west from Chestnut Ridge. Price, $1 40 ; postage, $0 20.
Page 219 - CCC. REPORT OF PROGRESS IN 1877. The Geology of LANCASTER COUNTY, with an atlas containing a colored geological map of the county, local map of the GAP NICKEL MINE, map and sections of the East Bank of Susquehanna River ; other geological sections across the county, and geological colored maps of York and Lancaster counties. By Persifor Frazer. 8 vo., pp. 350. Price of Report, $0 89 ; postage, $0 16.
Page 221 - RIVER VALLEY IN FAYETTE AND WESTMORELAND COUNTIES. with Geological Notes of the Coal and Iron Ore Beds, from Surveys, by Charles A. Young; by Franklin Platt. To which are appended: I. A Report on Methods of Coking, by John Fulton. II. A Report on the use of Natural Gas in the Iron Manufacture, by John B. Pearse, Franklin Platt, and Professor Sadtler. Pp. 252. Price, f 1 00 ; postage, $0 12.
Page 219 - SKETCH OF GEOLOGICAL EXPLORATIONS in Pennsylvania and other States. By JP Lesley. With appendix, containing Annual Reports for 1874 and 1875 ; pp. 226, 8vo.
Page iii - Board of Commissioners of Geological Survey, In the office of the Librarian of Congress, at WASHINGTON, DC Electrotyped and printed by LANE S.
Page 220 - SPECIAL. REPORT ON THE TRAP DYKES AND Azoic ROCKS of Southeastern Pennsylvania, 1875; Part I, Historical Introduction. By T. Sterry Hunt. 8 vo., pp. 253. Price, $0 48 ; postage, $0 12.
Page 222 - Mr. FW FORMAN is authorized to conduct the sale of reports ; and letters and orders concerning sales should be addressed to him, at 223 Market street, Harrisburg. Address general communications to WM. A. INGHAM, Secretary. By order of the Board, WM. A. INGHAM, Secretary of Board. Rooms of Commission and Museum : Address of Secretary: MS Market Street, Harrisburg.
Page 222 - P. 1879 — ATLAS OF THE COAL FLORA OF PENNSYLVANIA AND OF THE CARBONIFEROUS FORMATION THROUGHOUT THE UNITED STATES. 87 plates with explanations. By Leo Lesquereux. Price, $3 35 ; postage, fO 22. PP. UPPER CARBONIFEROUS FLORA OF WEST VIRGINIA AND SW PENNSYLVANIA, with 38 plates and text.