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analysis Ansonville anticlinal anticlinal axis average specimen bank Barren measures Beaver Run bed of coal bench Black slate Black slate roof Bony coal Cambria county Centre county Chest creek Clarion sandstone clay Clearfield county Clearfield creek coal measures Coal Run Coalport Coke Colliery Color of ash Conglomerate Curwensville east elevation fallen shut feet above tide feet of coal Fire-clay floor Fixed carbon four feet thick Freeport Lower coal Freeport Upper coal Girard township gray hill Houtzdale Interval iron Johnstown Cement Bed Karthaus Kittanning Lower coal Kittanning Middle Coal—Bed Kittanning Upper Coal layer lies Limestone Little Clearfield creek Mahoning Sandstone Mapleton Middle Coal Morrisdale Moshannon Moshannon Creek north-east Osceola outcrop postage probably railroad Report of Progress Ridge road rock Sandy Second Basin Shales short distance slaty south-east south-west Sulphur summits Susquehanna river three feet thick township upper bed Volatile matter Wallaceton Water water-level West Branch
202 ページ - 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.
204 ページ - REPORT OF PROGRESS IN 1879. 8 vo., pp. 232. The Geology of CLARION COUNTY, by H. Martyn Chance, with colored geological map of county, a map of the Anticlinals and OIL BELT, a contoured map of the Old River Channel at Parker, 83 local sections figured in the text, and 4 page plates. Price, |0 43 ; postage, $0 12.
iii ページ - Board of Commissioners of Geological Survey, In the office of the Librarian of Congress, at WASHINGTON, DC Electrotyped and printed by LANE S.
203 ページ - 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.
203 ページ - Price, $0 40 ; postage, $0 12. P. 1879 — REPORT AND ATLAS OF THE COAL FLORA OF PENNSYLVANIA AND OF THE CARBONIFEROUS FORMATION THROUGHOUT THE UNITED STATES. By Leo Lesquereux. Price of Report, $0 80 ; postage, $0 28. Price of Atlas, $3 35 ; postage, $0 22. P2.
203 ページ - 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.
200 ページ - 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.
201 ページ - CREEK IN POTTER COUNTY. By Franklin Platt. III. ON THE COKING OF BITUMINOUS COAL. By John Fulton. Illustrated with 2 colored Geological county maps, 3 page plates and 35 cuts. 8 vo., pp. 271. Price, $1 00 ; postage $0 12.
202 ページ - 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, 90 60; postage, $0 05.