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GEOLOGY AND PALEONTOLOGY. 169 
Meek, F. B., and Hayden, F. V. Descriptions of New Fossil Species of 
Molluska Collected by Dr. F. V. Hayden in Nebraska. Proc. Phila. 
Acad. Sci., 8: 265-286. 
1857. 
Hall, James. Observations on the Cretaceous Strata of the United States. 
Am. Jour. Sci., 24: 72-86. 
Hayden, F. V. Notes Explanatory of a Map and Section Illustrating the 
Geological Structure of the Country Bordering on the Missouri River 
from the Mouth of the Platte to Fort Benton. Proc. Phila. Acad. Sci., 
9: 109-116. 
Meek, F. B., and Hayden, F. V. Descriptions of New Species and Genera 
Collected in Nebraska, . . . withsome Remarks on the Tertiary and 
Cretaceous Formations. Proc. Phila. Acad. Sci., 9: 117-133. 
Meek, F. B., and Hayden, F. V. Notes on the Cretaceous Rocks of Nebraska. 
Proc. Phila. Acad. Sci., 8: 63. 
1858. 
. Hall, James. Supra-Carboniferous Formations of Iowa— Cretaceous. 
Geological Survey of Iowa, vol. 1, pt. 1. 
. Hayden, F. V. Explanation of a Second Edition of a Geological Map of 
Kansas and Nebraska. Proc. Phila. Acad. Sci., 9: 139-157. 
. Hawn, F. Trias of Kansas. St. Louis Acad. Sci., 1: 171. 
. Heer, Oswald. Descriptions of Fossil Plants from Nebraska. Proc. Phila. 
Acad. Sci., 10: 265, 266 
. Marcou, Jules. American Geology. On some Points of Geology of Texas, 
New Mexico, Kansas, and Nebraska, addressed to Messrs. Meek and 
Hayden. Zurich, 16 pp. 
Meek, F. B., and Hayden, F. V. Remarks on the Lower Cretaceous of 
Kansas and Nebraska. Proc. Phila. Acad. Sci., 10: 256-264. 
. Lewis, Meriwether, and Clarke, William. MHistory of Expedition, etc. 
Popular presentation, with map, by Paul Allen, 2 vols. 
1859. 
Lesquereux, Leo. (Heer, O.) Fossil Plants Collected by Dr. John Evans at 
Vancouver Island. Am. Jour. Sci., 28: 85-89. 
Meek, F. B., and Hayden, F. V. Descriptions of New Organic Remains 
Collected in Nebraska Territory in 1857 by Dr. F. V. Hayden, : 
with Remarks on the Geology of the Black Hills. Proc. Phila. Acad. 
Sci., 11: 41-49. 
Meek, F. B., and Hayden, F. V. On the So-called Triassic Beds of Kansas 
and Nebraska. Am. Jour. Sci., 27: 31-35. 
Meek, F.. B., and Hayden, F. V. Remarks on the Lower Cretaceous Beds 
of Kansas and Nebraska. Am. Jour. Sci., 27: 219-227. 
Meek, F. B., and Hayden, F. V. Geological Explorations in Kansas Terri- 
tory. Proc. Phila. Acad. Sci., 11: 8-30. Reproduced in Am. Jour. Sci., 
27 : 424-432. 
Newberry, J.S. Fossil Plants from the Cretaceous Formations of Kansas 
and Nebraska (from a letter to Meek and Hayden). Am. Jour. Sci., 
27 : 31-35. 
Newberry, J. S. Cretaceousand Tertiary Plants. Hayden’s Report on the 
Exploration of the Missouri River, p. 146. 
1860. 
Hayden, F. V. Notes on the Geology of Nebraska and Utah Territories. 
Am. Jour. Sci., 29: 433, 434. 
