734 



CATALOGUE AND INDEX OF 



[BirtL. 127. 



Pennsylvania — Continned. 



1880. Eenovo coal basin, Ashburner. 

 Geology of MoKean County, 



Asliburner. 

 Eelations of crystallinesof eastern 



Pennsylvania, Hall, C. E. 

 Review of stratigraphy of eastern 



Ohio, Orton. 

 Special survey of sub-Carbonif- 

 erous, Chance. 

 Surface geology of southwestern 



Pennsylvania, Stevenson. 

 Pre-Glacial channels of Alleghany 



and Clarion rivers, Lesley, 



J. P. 

 Fossils in Peach Bottom slates, 



Lesley, J. P. ; Frazer. 

 Tangascootac coal basin, Piatt, P. 

 Bradford oil sand, Ashburner. 

 Fossils in quartzose rocks of the 



lower Susquehanna, Frazer. 

 Permian flora, Pennsylvania and 



West Virginia, Fontaine and 



"White. 

 Coal, Shaefer, P. W. 

 Analyses of limestones, Cumber- 

 land County, Lesley, J. P. 

 Geology of Clinton County, 



Chance, Lesley, J. P. 

 Well records in McKean and Elk 



counties, Ashburner. 



1881. Primitive industry, Abbott, C. C. 

 Third report of laboratory of 



survey of Pennsylvania, Mc- 



Creath. 

 Iron ores and lignites of Mont- 

 gomery County valley, Lewis, 



H. C. 

 Serpentine in Radnor Township, 



Rand. 

 On philadelphite, Lewis, H. C. 

 Potsdam in Montgomery County, 



Rand. 

 Report on Jefferson County, 



Piatt, W. G. 

 Trenton gravels and antiquity of 



man, Lewis, H. C. 

 Map of Mahanoy and Shenandoah 



basins, Ashburner. 

 Peculiar stratification in gneiss 



near Philadelphia, Rand. 

 Bryn Mawr gravel, Lewis, H. C. 

 Serpentine in Bucks County, 



Lewis, H. C. 

 Graphite of Chester County, 



Frazer. 



Pennsylvania— Continued. 



1881. Geology of Blair County, Piatt, F. 

 How anthracite lies in the rocks, 



Piatt, F. 



Bone oaves of Pennsylvania, 

 Leidy. 



Report on geology of Philadel- 

 phia County, etc.. Hall, C. E. ; 

 Lesley, J. P. 



Antiquity of man in the East, 

 geologically considered, Lewis, 

 H.C. 



Iron ores of Brandon period, 

 Lewis, H. C. 



Geology of Erie and Crawford 

 counties. White, I. C; Lesley, 

 J. P. 



Serpentine of Delaware county. 

 Rand. 



Surface geology of Philadelphia 

 and vicinity, Lewis, H. C. 



Susquehanna and Wayne coun- 

 ties, White, L C. 



Construction of cross sections. 

 Chance. 



Change of serpentine into quartz. 

 Rand. 



Taconic system in geology. Hunt, 

 T.S. 



Action of frost in superficial ma- 

 terial, Kerr. 



Influence of structure on history, 

 Beohdolt. 



Analyses of minerals and rocks 

 from Bucks, Philadelphia, and 

 Montgomery counties, Genth. 



Potsdam on South Valley hiU, 

 Lewis, H. C. 



Millstone grit in England and 

 Pennsylvania, Chance. 



1882. Amount of oil remaining, Wrig- 



ley. 

 Gfiologie du sudest de la Penn- 



sylvanie, Frazer. 

 Flood of Connecticut Valley from 



the glacier, Dana, J. D. 

 Survey of Delaware Water Gap, 



Chance. 

 Geology of Pike and Monroe 



counties, White, I. C; Lesley, 



J. P. 

 Former flow of the upper Ohio, 



Lesley, J. P. 

 Notes on Cumberland and Poto- 

 mac coal basin, Lesley, Jones, 



H.N. 



