OF NORTH AMERICA. 
143 
1857 - Hayden, 
F. V. — Notes explanatory of a Map and Section illustrating the Geological Structure of the country 
bordering on the xVissouri river, from the Mouth of the Platte river to Fort Benton 
(Extract from the Proc. of the Acad, of Nat. Sc. of Philadelphia , May 1857.) ; 
8®. Philadelphia. 
N. B. — These two last very interesting Memoirs by Hayden and Meek, were received the 25th March 1858, too late 
to be used in this work. 1 w ill only say tlial 1 do not agree as to the identiiication of formation No. 1 of vertical section 
(System If, Cretaceous) of the vicinity of Sioux City and Wood’s Bluffs, w'ith what Mr. Hayden calls: formation No. i? of 
the general section, as seen near the mouth of Judith river, near Fort Benton; and also, that I differ entirely from them as 
to the geological age of these two formations. The red formation of the vicinity of Sioux City, lying upon the Carboni- 
ferous rocks, is of the New lied Sandstone epoch; and the Sandstone formation of Judith river is of the Jurassic epoch. 
In the sections of the rocks in North-Eastern Kansas , by F. Hawn, I found to my great astonishment a synchronism under my 
name. 1 had never before seen that section , consequently the synchronism is not mine. If 1 have to express an opinion 
upon these Kansas sections, I will say that division a is Cretaceous, and divisions b, c, d, e, f, g, h, i, j, k, and 1, 
are of the New lied Sandstone epoch; but I do not see in it anything of the Jurassic epoch; the Jurassic rocks are farther West. 
CALIFOUNIA, ORECJON, AND WASHINGTON TEItKITORY. 
18 H — Mofras , Dullot de — Exptoralion clu Terriloire de I’On'gon, des Californies et de la Mer Yermeillc, executee 
pendant les aiinees 1840, 1841 et 1842. 2 vol., S"; avec un atlas in folio, Paris. 
1848 — Fremont, J. C. — Geographical Memoir upon Upper California, in illuslration of his map of Oregon and 
California: addressed to the Senate of the United States. 8°. Washington. 
1850 — Dana, James D. — United Stales Exploring Expedition. During the years 1838, 1839, 1840, 1841, 1842. 
Under the command of Charles fVilhes , U. S. A'. Geology. (Chapter XVII : On 
Oregon and Northern California; Appendix I, N“ 3 , Possils of Oregon.) 4°, 
with a folio atlas. New York. 
1850 - ’laylor, Bayard — Eldorado. (Appendix; Report of T. Butler King, on the Mclallic and mineral wealth 
of California.) 2 vol. , 8”. New York. 
1850 — Tyson, p. T. — Report upon the Geology of California; 8®. Washington. 
1850 — Williamson ^ and Derby — Report on the Topography of California; 8“. Washington. 
1851 — “■ Report of the Special Comruittee in favor of a Geological Survey of California; 8“. 
1854 — Wilson^ J. S. — On the Gold Regions of California (Extract from the Quart. Journ. of the Geol. Soc. 
of London, vol. X.); 8®. London. 
1854 John B. — Report on the Geology of the Coast Mountains and part of the Sierra Nevada; 8“. Sa- 
cramento. 
1855 — Marcou, Jules — Swr le Giscmenl de I'Or en Californie (Extract from : Bibliolheque Universelle de Geneve, 
fevrier.) ; 8®. Geneve. 
1855 — 1 rusk ^ John B. — Report on the Geology of Ike Coast Mountains, and portions of the Middle and Northern 
Mining Districts ; 8®. Sacrtimcnlo. 
1855 — Pacific Railroad Rxpl. — Report of the Secretary of War on the several Pacific Railroad Explorations. 
Documents accompanying the report of the Secretary of War. IV, Report of 
Exploration of a route near the forty-seventh and forty-ninth parallels , from St. 
Paul to Puget Sound, by I. I. Stevens (Appendix: Report of G. Gibbs upon the 
Geology of the Central portion of Washington Territory.). X . Report of a re- 
connaissance and survey in California, by R. S. Williamson (Appendix: Pre- 
liminary Geological Report, by W. P. Blake; and: Paleontology, by Conrad. 
Bailey, and Agassiz.). 8®, Washington. 
