The Geological History of PlantsD. Appleton & Company, 1892 - 294 pagini |
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Pagina
... Observations on their Habits . By CHARLES DARWIN , LL . D. , F. R. S. With Illustrations . $ 1.50 . 38. THE CONCEPTS AND THEORIES OF MODERN PHYSICS . By J. B. STALLO . $ 1.75 . 39. THE BRAIN AND ITS FUNCTIONS . By J. LUYS . $ 1.50 . 40 ...
... Observations on their Habits . By CHARLES DARWIN , LL . D. , F. R. S. With Illustrations . $ 1.50 . 38. THE CONCEPTS AND THEORIES OF MODERN PHYSICS . By J. B. STALLO . $ 1.75 . 39. THE BRAIN AND ITS FUNCTIONS . By J. LUYS . $ 1.50 . 40 ...
Pagina 3
... observed that in some single exposures or series of exposures , like those in the great cañons of Colorado , or on the coasts of Great Britain , we can often in one locality see nearly the whole sequence of beds . Let us observe . here ...
... observed that in some single exposures or series of exposures , like those in the great cañons of Colorado , or on the coasts of Great Britain , we can often in one locality see nearly the whole sequence of beds . Let us observe . here ...
Pagina 4
... observed , since only the latest of the sys- tems of formations in this table belongs to the period of human history , that the whole lapse of time embraced in the table must be enormous . If we suppose the modern period to have ...
... observed , since only the latest of the sys- tems of formations in this table belongs to the period of human history , that the whole lapse of time embraced in the table must be enormous . If we suppose the modern period to have ...
Pagina 12
... observed that an immense area in Canada appears to be occupied by these graphitic and Eozoon limestones , and that rich graphitic deposits exist in the continuation of this sys- tem in the State of New York , while in rocks believed to ...
... observed that an immense area in Canada appears to be occupied by these graphitic and Eozoon limestones , and that rich graphitic deposits exist in the continuation of this sys- tem in the State of New York , while in rocks believed to ...
Pagina 13
... observed an indication of ter- restrial vegetation , or at least of subaërial decay , in the great beds of Laurentian iron - ore . These , if formed in the same manner as more modern deposits of this kind , would imply the reducing and ...
... observed an indication of ter- restrial vegetation , or at least of subaërial decay , in the great beds of Laurentian iron - ore . These , if formed in the same manner as more modern deposits of this kind , would imply the reducing and ...
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Termeni și expresii frecvente
abundant Acrogens aërial roots Algæ allied America animal appear arctic areoles bark beds belong bituminous branches Brongniart Calamites Canada carbon Carboniferous Caulopteris cellular character clay climate coal coal-formation conifers Cordaites cycads Dadoxylon Dawson deposits described Devonian diameter dicotyledonous Eocene Europe exogenous fact ferns flora formation forms fossil fossil plants fronds fructification fruit Gaspé genera genus Geological Society graphite Greenland gymnospermous Heer hemisphere Journal known land land-plants Laramie Laurentian leaf-bases leaf-scars leaves Lepidodendron Lepidophloios Lesquereux limestone Lower Carboniferous Lycopods macrospores matter medullary rays Mesozoic Miocene modern Nematophyton northern Nova Scotia occur outer Palæozoic period Permian pines pinnules pith present preserved probably Prof Psilophyton referred remarkable resemble Rhizocarps rocks sandstones scalariform scars Sequoia shales Sigillaria Silurian similar species specimens Sphenophyllum Sporangites spore-cases spores sporocarps stems Sternbergia structure surface Tertiary thick tion tissue tree-ferns trees trunks types Upper Cretaceous vascular vegetable wood woody