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acuminate Alethopteris apex base basilar bipinnate bolsters borders branches Brgt Brongniart Cannelton Carboniferous Cardiocarpus centimeters broad characters coal beds coal measures connate Cordaites curved Cyclopteris decorticated decurring described dichotomous distant distinct distinctly divisions enlarged epidermis Ferns Figs figured five millimeters flattened forking once former species foss fragments Frond fructifications Gein genus GeoI Geol Goepp Halonia Hutt inflated inside scars lanceolate lateral veins leaf scars leaflets leaves Lepidodendron Lepidophloios Lepidostrobus Lesqx linear lobes lower mamilla marked Mazon Creek medial nerve middle midrib millimeters broad millimeters long narrow nervation Neuropteris oblique oblong obtuse Ohio oval ovate Paleont Pecopteris pedicel Penn'a pinna pinnules Pittston plants point of attachment Prof rachis referable represent Rept rhomboidal ribs right angle Schimper Schp seen shale Sigillaria slightly smooth specimens Sphenopteris sporanges stem striate strobiles surface thick thin truncate tubercles undulate upper vascular scars Veget venation Verst
Page lxviii - 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 be furnished at cost of publication to all other applicants for them.
Page lxvi - 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 lxvii - 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 lxv - REPORTS. A. HISTORICAL SKETCH OF GEOLOGICAL EXPLORATIONS in Pennsylvania and other States. By JP Lesley. With appendix, containing Annual Reports for 1874 and 1875 ; pp. 226, 8vo. Price in paper, $0 25 ; postage, $0 06.
Page 690 - On the Vegetation of the Carboniferous Period as compared with that of the present day," published in 1848, was an important contribution to the science.
Page lxvi - REPORT OF PROGRESS IN THE JUNIATA DISTRICT on Fossil Iron Ore Beds of Middle Pennsylvania. By John H. Dewees. With a report of the AUGHWICK VALLEY AND EAST BROAD TOP DISTRICT.
Page 347 - Trunk two to three inches in diameter, longitudinally rugose ; leaf scars broad, rounded above and radiatingly rugose, with an irregular scar below, arranged spirally in about...
Page iv - Susquehanna and Wayne counties. JF CARLL — Geologist in charge of the Survey of the Oil Regions. HM CHANCE — Geologist to report on the Mining of the Anthracite coal fields. CA ASHBURNER — Geologist to report on the Geology of the Anthracite coal fields.