Abstract
THE official report of the geological explorations prosecuted during the past summer by Prof. F. V. Hayden, under the authority of the Department of the Interior, has just been published by the Government in a well-printed volume of over five hundred pages, containing a full account of the geology and natural history of the region traversed. It embraces an article by Prof. Hayden upon the physical character and local geology of the different sections of his route, which extended from Cheyenne, by way of Fort Fetterman, South Pass, Fort Bridger, the Uinta Mountains, to Green River, and back again, viâ Bridger's Pass, to Cheyenne. This is followed by an account of the Geology of the Missouri Valley from Omaha to Salt Lake Valley, with observations on the mines, ores, coals, and salts. An appendix contains an article by Prof. Cyrus Thomas upon the agricultural possibilities of the country, with a list of the orthopterous insects, including a number of new species, followed by a number of special reports—as one by Prof. Meek, on the invertebrate fossils; on the Tertiary coals of the West, by Prof. Hodge; on the ancient lakes of Western America, by Prof. Newberry; on the vertebrate fossils of the Tertiary formation, by Prof. Leidy; on the fossil plants of the Cretaceous and Tertiary formations of Kansas and Nebraska, by Mr. Lesquereux; on the fossil reptiles and fishes of the Cretaceous rocks of Kansas, the fossil fishes of the Green River group, and the recent reptiles and fishes, by Prof. Cope; and on the industrial resources of Western Kansas and Eastern Colorado, by Mr. Elliott. Lists of the mammals, molluscs, and birds, of the coleoptera, hemiptera, and plants, are also included, together with an account of the general meteorology of the expedition. A large number of new species of different kinds are described, and the whole work forms a very important addition to our information relative to the geology, geography, and natural history of the West.
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American Notes * . Nature 4, 109 (1871). https://doi.org/10.1038/004109a0
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DOI: https://doi.org/10.1038/004109a0