The Mississippi Valley: Its Physical Geography, Including Sketches of the Topography, Botany, Climate, Geology, and Mineral Resources ; and of the Progress of Development in Population and Material WealthS.C. Griggs, 1869 - 443 sivua |
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Alleghanies animal Arctic Atlantic Slope Azoic Basin become beds belt California Carboniferous Caribbean Sea character coal coast Colorado Colorado Desert Continent Cretaceous cultivation deposits desert developed Devonian earth east eastern elevation extending feet fertility forest forms Fort Riley fossils Frémont Geological grasses Gulf Gulf of Mexico heat height hence hills Illinois islands Kansas Lake Michigan Lake Superior land latitude lignite limestone lines Loess Mexico miles Mississippi Valley Missouri moisture mouth navigable nearly northern northwest observed ocean Ohio origin Pacific Pacific Railroad Surveys plains plants population portion prairies precipitation Railroad rain range region ridges River rocks Rocky Mountains sand sandstone season shales shores Sierra Nevada Silurian southern southwest square miles steppes strata streams summer surface tains temperature Tertiary thickness tion trees Triassic tropical United Upper vast vegetation volcanic western wheat whole winds winter zone