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Allegheny river anticlinal Apollo arch Armstrong county axis Barren Measure basin bench black slate Brady's Bend Brookville Buhrstone Butler county cannel slate Carbonate Clarion county coal bed coal seam coke color compact condition Cowanshannock Cowanshannock creek Crooked creek crosses deposit east exposed exposures farm feet thick Ferriferous limestone ferruginous Fireclay forks Freeport Lower coal Freeport sandstone Freeport Upper coal Freeport Upper limestone geology Glade run hills horizon impure Indiana county Interval Johnstown cement Kiskiminitas Kittanning Lower coal Kittanning Upper coal latter layers Leechburg lime Lower Barren Lower Productive rocks Mahoning creek Mahoning sandstone Manorville massive McCreath mile mill mined mouth nearly northwest outcrop line Parker City Phosphorus Pine creek Pottsville Pottsville Conglomerate Productive Coal Measures Putneyville pyrites quarried railroad ravine Red Bank region Report road Roaring run roof shales slaty slopes Stewardson stone strata stratum stream Sulphur synclinal township uplands valley water level
Page 341 - 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 341 - 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.
Page iv - HC LEWIS— Volunteer geologist for the survey of the gravel deposits of south-eastern Pennsylvania. LEO LESQUEREUX— Fossil Botanist, Columbus, Ohio. EB HARDEN— Topographer in charge of Office Work, <fec.
Page 340 - 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 342 - PROGRESS — 1878. Parti. 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 342 - Other Reports of the Survey are in the hands of the printer, and will soon be published. The sale of copies is conducted according to Section 10 of the Act, which reads as follows : * * * " Copies of the Reports, with all maps and supplements, shall be donated to all public libraries, universities, and colleges in the State, and shall %« furnished at cost of publication to all other applicants for them.
Page 339 - B. PRELIMINARY REPORT OF THE MINERALOGY OF PENNSYLVANIA — 1874. By Dr. FA Genth. With appendix on the hydro-carbon compounds, by Samuel P. Sadtler. 8vo., pp. 206, with map of the State for reference to counties. Price in paper, S0 50 ; postage, $0 08.
Page 220 - Ball ore occurs under the regular bed. ' ' § 357. The ore was mainly worked by the Company on the high plateau between Holder's run and Greenville run. It extends also west of Holder's run, and apparently in good condition. Towards the south its horizon is under all the high land of Sugar Creek township. It was once worked in the region west from Buffalo mills. North of Sugar creek its run is obscure, probably by reason of its diminished thickness there. A chemical analysis by Mr. McCreath of a...
Page lviii - The carbonates unroasted average from 33 to 38 per cent of metallic iron ; the brown and red ores contain as high 50 per cent of iron, the average being perhaps about 45 per cent. All of the ores are comparatively low in phosphorus — two tenths of one per cent being the usual amount, both in the carbonates and hematites. The sulphur is also low, amounting in many cases to scarcely more than a trace. The hematites contain none of the protoxide of iron. The poor quality of iron made from these ores...
Page 218 - I believe, to the local strain of the dip, and the local composition of the stratum. The law governing the number of these cleavage planes is a simple one ; the distance of the clefts from one another is, in the main, proportionate to the massiveness of the strata which they divide ; that is, the cleavage planes of the great beds of massive sandrocks lie much further asunder than those of the thin-bedded sandstones ; while those subdividing beds of shale are still closer to each other and more numerous....