40 PROCEEDINGS OF THE PITTSBURGH MEETING 



River to the Pacific Ocean (by Williamson) in 1853. House Ex. Doc, 33d 

 Cong., 1 sess.. No. 129, 1854, pp. 1-80. 



Reiwrt on the geology of the route (for the Pacific Railroad) near the 32d 

 Parallel ; prepared from the Collections and Notes of Captain John Pope. 

 1856. Ibid., vol. ii, 1855, pp. 50. 



Observations on the physical geography and geology of the coast of California 

 from Bodega Bay to San Diego, Physical geography of the mountain 

 ranges adjoining the coast. Geology of the principal bays from Point Reyes 

 to San Diego. U. S. Coast Survey Report for 1855, pp. 376-398. 



Notes upon silicified plants found as fossils in California. House Ex. Doc, 

 33d Cong., 1 sess.. No. 129 (Appendix), 1855, pp. 20-21, 28-29. 



Report on the geology of the route (near the 35th Parallel ; explored by Lieut. 

 A. W. Whipple, Top. Engr., 1853-4) ; No. 1, General report upon the Geo- 

 logical collections ; No. 2, Translation of resume and field notes by Jules 

 Marcou, geologist and engineer to the expedition. House Ex. Doc, 33d 

 Cong., 2 sess., No. 91 (Explorations for a route from the Mississippi River 

 to the Pacific), vol. iii, pt. iv, 1856, pp. 1-98, 125-164. 



Geological Report: No. 1, Itinerary or notes and general observations upon 

 the geology of the route ; No. 2, Geology of portions of the route. In re- 

 port of explorations in California for railroad routes to connect with the 

 route near the 35th and 32d Parallels of north latitude, by Lieut. R. S. 

 Williamson, in 1853. Ibid., vol. v, pt. ii, 1856, pp. xviii, 1-310. 



Notice of the geological collection (made by Shumard on Marcy's expedition 

 on Big Wichita and Brazos rivers). Sen. Ex. Doc, 34th Cong., 1st sess.. 

 No. 60, 1856, pp. 46-47. 



Observations on the geological specimens collected by G. K. Warren from 

 the bluffs of a ravine in the Mauvaises Terres. (Explorations in the 

 Dakota country in 1855 by Warren.) Sen. Doc, 34th Cong., 1st sess., 

 No. 76, 1856, pp. 63-66. 



Silver ores and silver mines. New Haven, 1861, pp. 181. 



Observations on the mineral resources of the Rocky Mountain chain near 

 Santa Fe and the probable extent southward of the Rocky Mountain gold 

 field. Proceedings of the Boston Society of Natural History, vol. vii, 

 1861, pp. 64-70. 



California minerals. Report of the mineralogist of the State Board of Agri- 

 culture. Sacramento, 1863. 



Der Stekin-Fluss in Britischen Nord-Amerika. Petermanns Mitteilung, vol. x, 

 1864, pp. 170-175. 



Notes on the geology and mines of Nevada Territory. Quarterly Journal of 

 the Geological Society, London, vol. xx, 1864, pp. 317-327. 



Notes upon the geography and geology of Russian America and the Stickeen 

 River from observations made in 1863. (A report to Secretary Seward 

 on Alaska.) House Ex. Doc, 40th Cong., 2d sess.. No. 117, pt. ii, 1868, pp. 

 2-17. 



Note on the occurrence of gold with cinnabar, in the secondary or tertiary 

 rocks. Proceedings of the Boston Society of Natural History, vol. xi, 

 1868, pp. 80-81. 



