Maryland Geological Survey 59 



1876 

 HoTCHKiss, Jed. Virginia : a geographical and political summary, em- 

 bracing a description of the State, its geolog}", soils, minerals, and climate 

 [etc.]. Richmond, 1876, pp. iv + 319, and 4 maps. 



1878 

 Stevenson, John J. The Upper Devonian rocks of southwest Pennsyl- 

 vania. 



Amer. Jour. Sci., 3d ser., voL xv, 1878, pp. 423-430. 



1879 



Hall, James. Paleontology, vol. v, part ii. Containing descriptions 

 of the Gasteropoda, Pteropoda, and Cephalopoda of the Upper Helderberg, 

 Hamilton, Portage, and Chemung groups. 



Geol. Surv. of New York, Albany, 1879, 4to, text, 494 -f xv pp., 113 plates. 



1882 



Jones, Howard Grant. Notes on the Cumberland or Potomac Coal 

 Basin. 



Proc. Amer. Phil. Soc, vol. xix, 1882, pp. 111-116 (No. 107, Nov., 1880). 



Stevenson, John J. The geology of Bedford and Fulton counties 

 [Pennsylvania]. 



2d Geol. Survey Pa., T', Harrisburg, 1882, 382 pp., two geological maps. 



White, I. C. Notes on the geology of West Virginia. A rectification 

 of the section made by Mr. Howard Grant Jones, M. S., and published 

 under the title of " Notes on the Cumberland or Potomac Coal Basin," 

 in Proc. A. P. S., No. 107, pp. 111-116. 



Proc. Amer. Phil. Soc, vol. xix, 1882, pp. 438-446, with plate. (No. 109, July, 

 1881.) 



1884 

 Rogers, William B. A reprint of annual reports and other papers, 

 on the geology of the Virginias. 8vo, 832 pp. with 8 plates of geological 

 sections and a geological map of Virginia and West Virginia. D. Apple- 

 ton and Company, New York, 1884. 



