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Alumina Al2 03 analysis anticlinal argillite bank Bart township belt calcareous Chester Chestnut Hill Chikis chlorite schist chloritic clay colored Conestoga copper Creek crosses deposit east Eozoic Ephrata excavation exposure farm feet Ferrous Oxide ferruginous formation fragments Fulton township Furnace geological gneiss half a mile hydro-mica schists intersection Iron Sesqui-oxide Fe2 kilometers Lancaster county Lime limestone limestone dips limestone slates limonite Little Britain township Magnesia Mesozoic mica schist dips micaceous mile 800 meters miles S. W. milk quartz mill mineral mines nearly nickel northern Orthofelsite outcrop Peach Bottom Phosphoric Oxide planes pyrite quarry Quarryville quartz quartzite quartzose ridge river road rock sandstone sandy seems Serpentine shaft short distance side Silica southern specimens Spring Station stone strata strike Susquehanna synclinal thickness tion tons town trap dyke Turkey Hill valley vein vertical yards or meters York County
Page 352 - REPORT OF PROGRESS IN THE JUNIATA DISTRICT on Fossil Iron Ore Beds of Middle Pennsylvania. By John H.
Page 353 - IV. Utilization of Anthracite Slack, by Franklin Platt. V. Determination of Carbon in Iron or Steel, by AS McCreath. With 3 indexes, plate, and 4 page plates. Pp. 438. Price in cloth, $0 65 ; postage, fO 18.
Page 353 - 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 iv - FA GENTH— Mineralogist and Chemist at Philadelphia. FA GENTH, Jr — Aid in the Laboratory. AS McCREATH — Chemist, in charge of the Laboratory of the Survey, 223 Market street, Harrisburg. JOHN M. STINSON— Aid in the Laboratory.
Page 353 - QQ. REPORT OF PROGRESS IN 1877. The Geology of LAWRENCE COUNTY, to which is appended a Special Report on the CORRELATION OF THE COAL MEASURES in Western Pennsylvania and Eastern Ohio. 8 vo., pp. 336, with a colored Geological Map of the county, and 134 vertical sections. By IC White. Price, $0 70 ; postage, $0 15.
Page 353 - 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 352 - I. REPORT OF PROGRESS IN THE VENANGO COUNTY DISTRICT — 1874. By John F. Carll. With observations on the Geology around Warren, by FA Randall ; and Notes on the Comparative Geology of North-eastern Ohio and Northwestern Pennsylvania, and Western New York, by JP Lesley. 8 vo., pp. 127, with 2 maps, a long section, and 7 cuts in the text. Price in paper, $0 60 ; postage, $0 05.
Page 352 - REPORT OF PROGRESS IN THE CAMBRIA AND SOMERSET DISTRICT OF THE BITUMINOUS COAL FIELDS of Western Pennsylvania — 1876. By F. and WG Platt. Pp. 348, illustrated by 110 wood-cuts and 6 maps and sections. Part II. Somerset. Price, $0 85 ; postage, $0 IS.
Page 352 - FALL BROOK, ARNOT, ANTRIM, AND GAINES COAL FIELDS, and at the FORKS OF PINE CREEK IN POTTER COUNTY. By Franklin Platt. III. ON THE COKING OF BITUMINOUS COAL. By John Fulton. Illustrated with 2 colored Geological county maps, 'A plates and 35 cuts. 8 vo., pp. 271. Price, $1 00; postage $0 12. H.