Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean (1855)
United States. War Department, author · Washington [D.C.] : A.O.P. Nicholson, printer · leaf 151
e sides and bottom, and were probably formed by the Indians for pounding their barley. About a mile east of the summit an outcrop of sandstone in the side of one of the hills con¬ tained numerous globular or spherical masses of sandstone, two or three feet in diameter. They are harder than the… … CONCRETION AND ARCH OF SANDSTONE. The sandstone adjoining the spheroidal mass has worn away so as to leave an arch, so perfect as to appear to be the work of art rather than the result of decay. Outerops of the strata became more common on the eastern side of the pass, and were of greater extent,…
Pacific railroads -- Explorations and surveys · Discoveries in geography -- American · Natural history -- West (U.S.) · Natural history -- California · Indians of North America -- West (U.S.) · West (U.S.) -- Description and travel · California -- Description and travel · United States -- Discovery and exploration
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