612 



CATALOGUE AND INDEX OP 



[BtJH.127. 



Maryland (including District of Colum- 

 bia) — Continued. 



1855. Ueber die Geologie von Nord- 



Amerika, Marcou, J. 

 Mineralreiclitbum der Vereinig- 

 ten Staaten, Diffenbacb. 



1856. Fifth report of chemist, Hig- 



gins. 



1857. Illustrations of surface geology, 



Hitchcock, E. 

 Copper lodes near Sykesville, An- 

 sted. 



1858. Sixth report of chemist, Hig- 



gins. 



Geology of Pennsylvania, Eogors, 

 H.D. 



Sketch of geology of the United 

 States, Rogers, H. D. 



Geology of North America, Mar- 

 cou, J. 



1859. Metamorphics of Atlantic Slope, 



Rogers, H. D. 

 Maryland marbles and iron ores, 

 Jackson, C. T. 



1860. First report of chemist, Tyson. 

 Second report of chemist, Tyson. 



1861. Infusorial earth from Maryland 



and Virginia, Rogers, W. B. 

 Dlatomaceous earth at Notting- 

 ham, .Johnson, C. 



1865. Eocene lignite, formation of the 



United States, Conrad. 



1866. Map of Canada and part of the 



United States, Logan and Hall. 



1867. Industrial resources, Higgins. 



1868. Origin and relations of certain 



sands and clays. Cope. 



1870. Surface geology of southwestern 



Pennsylvania, Stevenson. 



1871. Cumberland coal basin, Tysou. 



1873. Glades of Maryland, Gibbs, G. 

 Geologic map of the United 



States, Hitchcock, Hitchcock, 

 C. H., and Blake. 



1874. Drift in Virginia, Stevens, R. P. 

 Amber in North America, Hagen. 

 Niagara and lower Helderberg 



in United States and Canada, 

 Hall, J. 



1875. Geologic chart of the United 



States, Bradley, F. H. 



Geology of the Blue Ridge, Fon- 

 taine. 



Tripoli near Nottingham, John- 

 son, C. 



Maryland (including District of Colum- 

 bia) — Continued. 

 1875. Concerning "Bermuda" tripoli, 

 SuUivant. 

 Primordial strata of Virginia, 



Fontaine. 

 Coal regions of America, Macfar- 



lane, J. 

 Gravel and cobble deposits of 

 Virginia, etc., Rogers, W. B. 



1878. Orthoceras cast in Azoic rock, 



Lesley, J. P. 

 Upper Devonian of southwestern 



Pennsylvania, Stevenson. 

 Dikes and Azoic of southeast 



Pennsylvania, Hunt, T. S. 



1879. Geology of South Mountain, 



Frazer. 



Macfarlane's Geological Railroad 

 Guide to Maryland, Uhler, Fon- 

 taine. 



Mesozoic of Virginia, Fontaine. 



1880. Surface geology of southwest 



Pennsylvania region, Steven- 

 son. 



Fossils in Peach Bottom slates, 

 Lesley, J. P.; Frazer, 



Hudson fossil in Maryland, Les- 

 ley, J. P. 



1881. Copper in Carroll County, Frazer. 

 Jurassic sand near Elkton, Lewis, 



H.C. 

 Tertiary of Maryland, Heilprin. 



1882. Upper Potomac coal field, Rior- 



don. 



Geology of West Virginia, rectifi- 

 cation of Jones's section. White, 

 I. C. 



Notes on Cumberland and Poto- 

 mac coal basin, Lesley, J. P. ; 

 Jones, H. N. 



Position of Eocene of Maryland, 

 Heilprin. 



1883. Notes on crystallines in District 



of Columbia, Merrill, G. P. 



Subterranean forest in District of 

 Columbia, McGee. 



History of Taoonic question and 

 relation of Taconian series, 

 Hunt, T. S. 



Ages and classification of post- 

 Eocene of Atlantic Slope, Heil- 

 prin. 



Surface features of the Baltimore 

 region, Uhler. 



