DABTON.] 



NORTH AMERICAN GEOLOGY. 



817 



Pomeroy, Samuel W. Remarks on the 

 coal region between Cumberland and 

 Pittsburg, and on the topography, 

 scenery, etc., of that portion of the 

 Alleghany Mountains. 



Am. Jour. Soi., vol. 21, pp. 342-347, 1832. 

 Pond, Edward J. A Cretaceous river 

 bed. 



Science, vol. 9, pp. 536-537, 4°, 1887. 

 Poole, Henry. Journal of exploratory 

 ■works at the Albion mines, Piotou, 

 Nova Scotia. 



Geol. Soc, Quart. Jour., vol. 10, pp. 47-51, 

 1854. 



Notes on the coal field of Piotou. 



Canadian Nat., vol. 5, pp. 285-293, 1860. 



On the characteristic fossils of dif- 

 ferent coal seams in Nova Scotia. 



Kova Scotiau Inst., Trans., vol, 1, part 1, pp. 

 30-45, plate, 1863. 



Report on gold fields, western sec- 

 tion, 25 pages, folio, Halifax, 1862 

 (legislative document). [Not seen.] 



The great American desert. 



Nova Sootian Inst., Trans., vol. 3, pp. 208- 

 220, 1874. 



The Pictou coal field. 



Am. Inst. Mining Eng., Trans., vol. 14, pp. 

 403-408, 1886. 



Ice in the Carboniferous period. 



Nova Sootian Inst., Proc, vol. 7, pp. 202-204, 

 1889. 



Surface geology of the Pictou coal 



field. 



Nova Scotian Inat., Trans., vol. 7, pp. 388- 

 393, 1891. 



Pope, John. Report of an exploration 

 of the Territory of Minnesota. 



Communicated in Report of Secretary of 

 "War, 3lBt Cong., Ist sess., Senate Ex. Doc. 

 No. 42, 56 pages, map [Washington, 1850] . 



[ ] Of boring or digging for water on 



the "Llano Estacado." 



Report of exploration of a route for the 

 Pacific Railroad near the thirty-second paral- 

 lel of latiinide, from the Red River to the Rio 

 Grande, hy Pope, pp. 46-50, 8°, House Doc. 

 No. 129, "Washington, 1854. 



Reports to A. A. Humphreys, topo- 

 graphical engineer in charge of office 

 of explorations and survey, War De- 

 partment. [Artesian boring in west- 

 ern Texas.] 



Annual Report, Capt. A. A. Humphreys, 

 topographical engineer, 1858, pp. 11-29, "Wash- 

 ington, 1859, 



Bull. 137 02 



Porter, J. Notice of a rocking stone in 

 Savoy, Mass. 



Am. Jour. Sci,, vol. 9, pp. 27-28, 1825. 



Cambridge, H. U., and "Webb, T. H. 



Account of the Roxbury rooking stone. 

 Am. Jour. Soi., vol. 7, pp. 59-61, 1824. 



Porter [John B.]. The iron ores and 

 coals of Alabama, Georgia, and Ten- 

 nessee. 



Am. Inst. Mining Eng., Trans., vol. 15, pp. 

 170-218, map, 1887. 



Porter, Timothy D. Cursory notice of 

 some parts of North and South Carolina. 

 Am. Jour. Soi., vol. 3, pp. 227-230, 1821. 



Appendix. [Floetz trap formation 



in Connecticut and Massachusetts.] 

 Am. Jour. Soi., vol. 4, pp. 241-242, 1822. 



Porter, William S. Sketches of the geol- 

 ogy, etc., of Alabama. 



Am. Jour. Sci., vol. 13, pp. 77-79, 1828. 



Posepeny, F. Geologie tiber die Hoch- 

 lande im westliohen Nord-Amerika. 

 K. k. geol. Reichsanstalt, Yerhandl., pp. 

 61-66, 1877. 



Posselt, C. Die Kupfer-Distrikte des 

 Obersee's. 



Neues Jahrbuch, 1856, pp. 1-10, 1856. 



Post, George E. The physical geography 

 and geology of Syria and Palestine. 

 New York Acad. Sci., Trans., vol. 7, pp. 

 166-178, 1888. 



Potter, C. E. Notice of a rocking stone 

 [near Hanover, N. H.]. 



Am. Jour. Soi,, vol. 24, pp. 185-186, 1833. 

 Potter, W. B. Geology of Lincoln 

 County. 



Geol. Surv. Missouri, preliminary report 

 on iron ores and coal fields from field work of 

 1872, part 2, pp. 217-289, New York, 1873. 



[On the semianthracite coal 100 



miles west of Little Rook, Ark.] 



Am. Inst. Mining. Eng., Trans., vol. 3, pp. 

 33-34 (i p.), 1875. 



The character and composition of 



the lignite coals of Colorado. 



Am. Inst. Mining. Eng., Trans., vol. 5, pp. 

 365-375, 1877. 



Pourtales, L. F. Microscopic examina- 

 tion of materials from bottom and 

 shores of the Mississippi River. 



XT. S. Army, Chief of Engineers, Report Sec. 

 War, 41st Cong., 3d sess., House Ex. Doc. No. 

 1, part 2, pp. 370-375, "Washington, 1870. 



Physics and hydraulics of the Mississippi, 

 hy Humphreys and Abhott, XT. S. Corps Top. 

 Eng., Prof. Papers, No, 13, pp. 65J-6?4, "Wash- 

 ington, 1870, 



