White. Also, the discovery of the Preglacial Outlet of Lake Erie,with two maps of the Lake Region. By J. W. Spencer, Ph. D. Price, $1 17; postage. $0 18.
I, I2 , I3, I4, Q3, V, V2. and R. Petroluem Region Reports By John F. Carll, I. C. White, H. M. Chance, and Chas. A Ashburuer.
CENTRAL PENNSYLVANIA.
F. Report of Progress in the Juniata District on Foissil Iron Ore Beds of Middle Pennsylvania. By John H. Dewees. With a report of the Aughwick Valley and East Broad Top District. By C. A. Ashburner. 1874–8. Illustrated with 7 Geological maps and 19 sections. 8 vo., pp. 305. Price, $2 55: postage, $0 20.
G. Report or Progress in Bradford and Tioga Counties. By Andrew Sherwood. (See Reports Bituminous Coal Fields.)
G2. Report of Progress. Geology of Lycoming and Sullivan Counties. I. Field Notes by Andrew Sherwood. II. Coal Basins, by Franklin Platt. With two colored geological county maps and numerous illustrations. 8 vo., pp. 268. Price, $1 06; postage, $0 14.
G4 Report of Progress in Clinton County. By H. M. Chance. (See Reports Bituminous Coal Fields.)
G7. Report of Progress. The Geology in the Susquehanna River Regions in the Six Counties of Wyoming, Lackwanna, Luzerne, Columbia, Montour, and Northumberland. By I. C. White. With a colored Geological Map in 2 sheets; and 31 page plates in text. Pp. 464. Price, $0 85; postage, $0 20.
T. Report of the Progress—1882 Geology of {{sc|Blair County, with 35 illustrations and an Atlas of 14 Sheets of the colored map of Morrison's Cove, &c.; 1 index sheet, and 2 sheets of colored sections. By Franklin Platt. Price of Report and Atlas, $1 55: postage, $0 28.
Tl. Reprot of Progress—1882. The geology of Bedford and Fulton Counties. By J. J. Stevenson. 8 vo., pp. 382. Illustrated with 2 colored geological maps. Price, $0 80 ; postage, $0 20.
NORTH-EASTERN PENNSYLVANIA.
'G5. Report of Progress. The Geology of Susquehanna County and Wayne County. By I. C. White. Pp.243, with geological map and 58 sections. Price, $0 70: postage, $0 12.
G. Report of Progress,1881. The Geology of Pike and Monroe Counties. By I. C. White 8 vo., pp. 407. Illustrated with colored Geolgical county maps, a map of glacial scratches, and 7 small sections. Also special surveys of the Deleware and Lehigh Water Gaps. By H. M. Chance, with 2 countoured maps of Water Gaps, and 5 detailed sections. Price $1 15; postage $0 15.
G7. The Geology in the Susquehanna (North Branch) River Region in the Six Counties of Wyoming, Lackwanna, Luzerne, Columbia, Montour, Northumberland, (exclusive of Anthracite Region.) by I.C.White. (see Reports Central Pennsylvania.)
G. Report of Progress in Bradford and Tioga Counties. By Andrew Sherwood. (See Reports in Bituminous Coal Fields.)
A2, AA and AC. Anthractie Region Reports. By Franklin Platt, Chas. A. Ashburner, and H.M. Chance. (See Reports Anthracite Coal Fields.)
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