The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina 8
... already land and water , and tha and possibly the land were already tenante beings . The great beds of limestone which part of the system furnish one indication of t later geological formations the limestones ar ganic - that is , they ...
... already land and water , and tha and possibly the land were already tenante beings . The great beds of limestone which part of the system furnish one indication of t later geological formations the limestones ar ganic - that is , they ...
Pagina 18
... already been introduced upon the earth . It has been well said that no amount of study of inorganic nature would ever have enabled any one to anticipate the possibility of the construction of an apparatus having the chemical powers of ...
... already been introduced upon the earth . It has been well said that no amount of study of inorganic nature would ever have enabled any one to anticipate the possibility of the construction of an apparatus having the chemical powers of ...
Pagina 24
... already referred . They are trees of large size , with a coaly bark and large spreading roots , having the surface of the stem smooth or irregularly ribbed , but with a nodose or jointed appearance . Internally , they show a tissue of ...
... already referred . They are trees of large size , with a coaly bark and large spreading roots , having the surface of the stem smooth or irregularly ribbed , but with a nodose or jointed appearance . Internally , they show a tissue of ...
Pagina 25
... already been referred to , and Claypole has described a tree from the Clinton . group of the United States , with large ovate leaf - bases , to which he has given the name Glyptodendron . † If the markings on these plants are really ...
... already been referred to , and Claypole has described a tree from the Clinton . group of the United States , with large ovate leaf - bases , to which he has given the name Glyptodendron . † If the markings on these plants are really ...
Pagina 32
... already suggested this origin for some scratches of somewhat different form found in the Primordial of Great Britain . He supposed them to have been the work of species of Hymenocaris . These marks may , however , indicate the existence ...
... already suggested this origin for some scratches of somewhat different form found in the Primordial of Great Britain . He supposed them to have been the work of species of Hymenocaris . These marks may , however , indicate the existence ...
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Termeni și expresii frecvente
acrogens aërial roots Algæ allied America appear arctic areoles bark beds belong bituminous branches Brongniart bundles Calamites Canada Carboniferous Caulopteris cells cellular character climate coal coal-formation conifers Cordaites cycads cylinder Dadoxylon Dawson Demy 8vo described Devonian diameter Eocene Erian Europe exogenous Fcap ferns flora formation forms fossil plants fronds fructification fruit Gaspé genera genus Geological Society graphite Greenland hemisphere Illustrations Journal Laramie Laurentian leaf-bases leaf-scars leaves Lepidodendron Lepidophloios Lesquereux limestone Lower Carboniferous Lycopods macrospores medullary rays Mesozoic Middle modern Nova Scotia occur outer Paleozoic period Permian petioles pines pinnate pinnules pith present probably Prof Psilophyton referred resemble Rhizocarps ribbed rocks sandstones scalariform scars Second Edition Sequoia shales Sigillaria Silurian similar Small crown 8vo species specimens Sphenophyllum Sporangites spore-cases spores sporocarps stems Sternbergia structure Tertiary thick Third Edition tion tissue tree-ferns trees trunks Upper Cretaceous vascular vegetable vols Williamson wood woody
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