192 



CATALOGUE AND INDEX OP 



[BULL. 127. 



Carboniferous — Continued. 

 New York, Pennsylvania, Mary- 

 land, Virginias— Continued. 



1843. Structure and contemporane- 



ous origin of coals, Johnson, 

 W. E. 



Fourth report of survey of sec- 

 ond district of New York, 

 Emmons, E. 



Geology of western district of 

 New York, Hall, J. 



Anthracite of Pine Grove, Pa., 

 Lea. 



Structure of Appalachians ex- 

 emplifying laws of mountain 

 chains, Rogers and Rogers. 



Connection of thermal springs 

 in Virginia with axes and 

 faults, Rogers, W. B. 



Origin of Appalachian coal, 

 Rogers, H. D. 



1844. American geology and condi- 



tion of research in United 

 States, Rogers, H. D. 

 Fossils near Sunbury, Pa., 

 Johnson, J. W. 



1845. Travels in North America, 



Lyell. 

 1847. Structure of the Appalachians 

 and laws of mountains, Rog- 

 ers and Rogers. 

 No coal in New York rooks, 

 Emmons, E. 

 1849. Statistics of coal, Taylor, R. C. 

 Geology of Pennsylvania, Rog- 

 ers, H. D. 



1851. Footprints in eastern Penn- 



sylvania, Rogers, H. D. 

 Dauphin and Susquehanna coal 



fields, Pa., Lea. 

 Coal formation, especially in 



Pennsylvania, Rogers, H. D. 



1852. Report of the James River and 



Kanawha Canal Company. 

 Footmarks in sandstone in 

 Schuylkill County, Pa., 

 Lea, I. 



1853. Geologic map of United States, 



etc., Marcou, J. 



1854. Flexures of coal hasin, Rogers, 



H.D. 

 Salt and gypsum of Holston 



River, Va., Rogers, H. D. 

 Observations on plants from 



coal of Pennsylvania, Rogers, 



H.D, 



Carboniferous — Continued. 

 New York, Pennsylvania, Mary- 

 land, Virginias— Continued. 



1855. Footprints in sandstone of 



Pottsville, Pa., Lea, I. 

 Mineralreichthum der Verein- 



igten Staaten, Diffenbach. 

 Fourth report of chemist of 



Maryland, Higgins. 

 Causes of certain markings in 



coal, Lewis, S. 



1856. Section in Lawrence County, 



Pa., Leasure. 

 Alluvium of the Ohio, King, 



A.T. 

 Origin of carbonate of iron in 



coal measures, Rogers, W. B. 

 Fossils in Carboniferous shales, 



Pennsylvania, Rogers, H. D. 



1857. Broadtop coal basin, Lesley, 



J. P. 



1858. Fossil plants of coal measures 



of United States, Lesquereux. 



Coal fields of United States and 

 British Provinces, Rogers, 

 H.D. 



Sketch of geology of United 

 States, Rogers, H. D. 



Fossil plants of coal of Penn- 

 sylvania, Rogers, H.D. 



Distribution of coal plants in 

 Pennsylvania and formation 

 of coal, Lesquereux. 



Physical geography attending 

 production of Paleozoic 

 strata, Rogers, H. D. 



Comparison of coal seams in 

 Kentucky and Pennsylvania, 

 Lesley, J. P. 



Geology of North America, 

 Marcou, J. 



Geology of Pennsylvania, Rog- 

 ers, H. D. 



Lectures on coal. Maxwell. 



1859. Geology of Bradford County, 



Pa., Horton, G. F. 



Coal formations of North 

 America, Lesquereux. 



Coal of Elk County, Pa., Jack- 

 son, C. T. 



Paleontology of New York, 

 vol. 3, Hall, J. 



1860. Geology of Indiana County, 



Pa., Anderson, W. 

 First report of chemist of 

 Maryland, Tyson. 



