The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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... FORMS of WATER : in Clouds and Rivers , Ice and Glaciers . By J. TYNDALL , LL.D. , F.R.S. With 25 Illustrations . Ninth Edition . 58 . II . PHYSICS and POLITICS ; or , Thoughts on the Application of the Principles of Natural Selection ...
... FORMS of WATER : in Clouds and Rivers , Ice and Glaciers . By J. TYNDALL , LL.D. , F.R.S. With 25 Illustrations . Ninth Edition . 58 . II . PHYSICS and POLITICS ; or , Thoughts on the Application of the Principles of Natural Selection ...
Pagina 9
... forms known as Eozoon Canadense have been recognised in the Laurentian lime- stones , which indicate the presence at ... form of the sub- stance known as graphite or plumbago exist in the Laurentian . Now , in more recent formations we ...
... forms known as Eozoon Canadense have been recognised in the Laurentian lime- stones , which indicate the presence at ... form of the sub- stance known as graphite or plumbago exist in the Laurentian . Now , in more recent formations we ...
Pagina 10
... forms , th true veins in which graphite occurs associate cite , quartz , orthoclase , or pyroxene , and eit ... form of structure , which also occurs at Warrensburg , I and at the Marinski mine in Siberia . Many of are not true fissures ...
... forms , th true veins in which graphite occurs associate cite , quartz , orthoclase , or pyroxene , and eit ... form of structure , which also occurs at Warrensburg , I and at the Marinski mine in Siberia . Many of are not true fissures ...
Pagina 16
... forms or tissues , or of our being able to distinguish the remains of land - plants from those of Algæ . We may sum up these facts and considerations in the following statements : First , that somewhat obscure . traces of organic ...
... forms or tissues , or of our being able to distinguish the remains of land - plants from those of Algæ . We may sum up these facts and considerations in the following statements : First , that somewhat obscure . traces of organic ...
Pagina 17
... forms and structures of the vegetation which produced it , we can scarcely suppress a feeling of disappointment . Some things , however , we can safely infer from the facts that are known , and these it may be well to mention . The ...
... forms and structures of the vegetation which produced it , we can scarcely suppress a feeling of disappointment . Some things , however , we can safely infer from the facts that are known , and these it may be well to mention . The ...
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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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