Charles Emerson Beecher, James Hall, John Peter Lesley and John Simpson Africa

“ But the publication of this branch of the geology of Pennsylvania has been delayed for various reasons—chiefly because the study and delineation of fossils demand the entire time and exclusive devotion of those who undertake it, and cannot be successfully carried on by a geologist who is commissioned to report on a large territory—to map an entire county—in one field season.
Secondly: The collection of fossils must go first,—their study and delineation is a tedious subsequent performance. ”

“ Claypole has expended upon the two counties of Perry and Juniata—or, rather, on parts of these two counties—must be bestowed on the other sixty-five counties of the Slate before it can be said that this part of the Geological Survey of Pennsylvania has been accomplished. A good beginning has certainly been made, but it will depend upon the intelligent interest of the citizens of the State whether or not the good beginning shall be prosecuted to a good end. ”

“ A truly intelligent people wishes to know the causes of facts, the reason of things, their relationships, their history, the logical conclusions of every kind which can be drawn from them by investigation. ”

“ But even the merest business man will comprehend its utility, if he be interested in coal mines and can assure himself that the recognition of certain forms in one particular coal bed is likely to aid him in identifying that particular coal bed in other localities. ”

“ The study of fossil shells found in formations beneath the coal measures is a really practical guide to certain limestone beds, and sometimes fixes in a very practical manner the order of rocks containing iron ore deposits, especially where downthrow faults have disturbed or concealed that order. ”

“ The world of fossils has become so vast and the number of geologists who devote themselves to its investigation is so limited, that it has become necessary to divide it up into many parts. The collections of deep sea soundings made by the British ship Challenger have been distributed for study to botanists and zoologists in every country in Europe, and even in America. ”

“ B. Preliminary Report on the Mineralogy of Pennsylvania—1874. By Dr. F. A. 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, $0 50 ; postage,$0 08. Price in cloth, $0 75; postage, $0 10.
L. 1875—Special report on the Coke Manfacture of the Youghigheny River Valley in Fayette and Westmoreland Counties, with Geological Notes of the Coal and Iorn 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. ”

“ Report of Progress—1875 to 1879. Geology of the Oil Regions of Warren, Venango, Clarion and Butler Counties, including surveys of the Garland and Panama Conglomerates in Warren and Crawford counties and in Chautaugua county, New York, with descriptions of oil well rig and tolls, and a discussion of the preglacial and postglacial drainage of theLake Erie Country; with Atlas. With maps and charts of Oil Regions. ”

“ AA. Atlas Northen Field, Part I, 1884. Contains 6 mine sheets between Wilkes Barre and Nanticoke, 3 cross-section sheets and — columnar section sheets, all relating to the Wyoming Basin in Luzerne county. In press Chas. A. Ashburner, Geologist in Charge, and Frank A. Hill, Assistant Geologist. Price, S ; postage, S .
G2 Part II. Loyalstock Coal Basin, Sullivan County. By Franklin Platt. (See Reports Central Pennsylvania.)
BITUMINOUS COAL FIELD AND SUBROUNDING AREAS.
F. Part II. East Broad Top District, Huntingdon County. By Chas.A. Ashburner (See Reports Central Pennsylvania.) ”