 Wherever there has been a variation from the usual conditions of the soil, on the prairie or in the river bottom, there is a corresponding change in the character of the vegetation. Thus, on the prairies we sometimes meet with ridges of coarse material,...  The American Journal of Science and Arts - Página 1051859Visualização completa - Sobre este livro
 | 1859 - 482 páginas
...through the finer material on the surface, wash away a portion of it altogether, and mix the rest BO effectually with the underlying drift materials, or...different parts of the State by different observers. From SECOND SERIES, VOL. XXVU, Xe. 7U.-JA J... 18*9. a comparison of these some light is thrown on another... | |
 | 1860 - 448 páginas
...has been a variation from the usual conditions of the soil, on the prairie or in the river bottom, there is a corresponding change in the character of...growth we are unable to account in any other way." ICEBERGS IN THE SOUTHERN OCEAN. Capt. Kirby, of the ship Uncowah, from New York to San Francisco, reports... | |
 | 1867 - 448 páginas
...meet with ridges of coarse material, apparently deposits of drift, on which, from some local canse, there has never been an accumulation of fine sediment;...growth we are unable to account in any other way." ICEBERGS IN THE SOUTHERN OCEAN. Capt. Kirby, of the ship TTncowah, from New York to San Francisco,... | |
 | 1867 - 460 páginas
...drift, on which, from some local cause, there has never been an accumulation of fine sediment ; in ench localities we invariably find a growth of timber....growth we are unable to account in any other way." ICEBERGS IN THE SOUTHERN OCEAN. Capt. Kirby, of the ship Vncowah, from New York to San Francisco, reports... | |
 | 1860 - 448 páginas
...has been a variation from the usual conditions of the soil, on the prairie or in the river bottom, there is a corresponding change in the character of...growth we are unable to account in any other way." ICEBEEGS IN THE SOUTHERN OCEAN. Capt. Kirby, of the ship Uncowah, from New York to San Francisco, reports... | |
 | 1878 - 496 páginas
...apparently deposits of drift, on which, from some local cause, there never has been un accumulation of tine sediment. In such localities we invariably find a...growth we are unable to account in any other way. The condition of things in the river valleys themselves seems to add to the plausibility of this theory.... | |
 | Benjamin F. Gue, Benjamin Franklin Shambaugh - 1899 - 572 páginas
...We sometimes meet with ridges of coarse material, apparently of drift deposits, on which from some cause there has never been an accumulation of fine...growth we are unable to account in any other way." Other writers hold that the prairie region was once submerged and attribute the drainage to slow upheavals... | |
 | Benjamin F. Gue, Benjamin Franklin Shambaugh - 1899 - 576 páginas
...some cause there has never been an accumulation of fine sediment. In such localities we in variably find a growth of timber. This is the origin of the...growth we are unable to account in any other way." Other writers hold that the prairie region was once submerged and attribute the drainage to slow upheavals... | |
 | Benjamin F. Gue - 1903 - 592 páginas
...timber. We sometimes meet with ridges of coarse material, apparently drift deposit, on which from some cause there has never been an accumulation of fine...growth we are unable to account in any other way." Dr. Charles A. White, who made a later geological survey of Iowa, in discussing this subject, says... | |
 | Benjamin F. Gue - 1903 - 590 páginas
...timber. We sometimes meet with ridges of coarse material, apparently drift deposit, on which from some cause there has never been an accumulation of fine...growth we are unable to account in any other way." Dr. Charles A. White, who made a later geological survey of Iowa, in discussing this subject, says... | |
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