The Geology of Chester County: After the Surveys of Henry D. Rogers, Persifor Frazer, and Charles E. Hall, Volume 9

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J. Peter Lesley
Board of Commissioners, 1883 - Chester County (Pa.) - 399 pages
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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 397 - 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...
Page 197 - It would seem to be a pretty general fact, that such of these veins as are confined entirely or chiefly to the gneiss bear lead as their principal metal, whereas those which are included solely within the red shale are characterized by containing the ores of copper. But the zinc ores, viz: zinc-blende and calamine, prevail in greater or less proportions in both set of veins, existing, perhaps, in a rather larger relative amount in the copper-bearing lodes of the red shale.
Page 398 - Armstrong, and Clarion Counties, by D. Jones Lucas : and also a Map and Profile of a line of levels along Slippery Rock Creek, by JP Lesley. 8 vo., pp. 122 ; 5 maps and sections, a plate and 5 cuts.
Page 400 - The Northern Townships of Butler county. Part II. A special survey made in 1875, along the Beaver and Shenango rivers, in BEAVER, LAWRENCE, and MERCER COUNTIES. 8 vo., pp. 248, with 4 maps, 1 profile section and 154 vertical sections. By H. Martyn Chance. Price, $0 70 ; postage, $0 15.
Page 30 - Colonies in America, and to prevent the Erection of any Mill or other Engine for slitting or rolling of Iron, or any plating Forge to work with a Tilt Hammer, or any Furnace for making Steel in any of the said Colonies...
Page 400 - Price, $1 70 ; postage, tO 22. T. REPORT OF PROGRESS. Geology of BLAIR COUNTY, with 35 illustratrations and an Atlas of 14 sheets of the colored map of MORRISON'S COVE, &c.
Page 197 - ... its average width at not less than eighteen inches. It is bounded by regular and well-defined, nearly parallel walls, the prevailing material of which is a coarse, soft granite, composed chiefly of white feldspar and quartz. " It would seem to be a pretty general fact that such of these veins as are confined entirely or...
Page 399 - 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 397 - E. 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.

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