The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina 9
... Canada more especially the deposits are very considerable . The graphite of the Laurentian of Canada occurs both in beds and in veins , and in such a manner as to show that its origin and deposition are contemporaneous with C those of ...
... Canada more especially the deposits are very considerable . The graphite of the Laurentian of Canada occurs both in beds and in veins , and in such a manner as to show that its origin and deposition are contemporaneous with C those of ...
Pagina 10
... n been derived from the bedded rocks traversed veins , to which it bears the same relation with * " Geology of Canada , " 1863 . LAURENTIAN AND EARLY PALEOZOIC . 11 of bitumen found in 10 THE GEOLOGICAL HISTORY OF PLAN.
... n been derived from the bedded rocks traversed veins , to which it bears the same relation with * " Geology of Canada , " 1863 . LAURENTIAN AND EARLY PALEOZOIC . 11 of bitumen found in 10 THE GEOLOGICAL HISTORY OF PLAN.
Pagina 11
... Canadian department of the Colonial Exhibition of 1886 . When it is considered that graphite occurs in similar abundance at several other horizons , in beds of limestone which have been ascertained by Sir W. E. Logan to have an ...
... Canadian department of the Colonial Exhibition of 1886 . When it is considered that graphite occurs in similar abundance at several other horizons , in beds of limestone which have been ascertained by Sir W. E. Logan to have an ...
Pagina 12
... Canada appears to by these graphitic and Eozoon limestones , an graphitic deposits exist in the continuation tem in the State of New York , while in rock be of this age near St. John , New Brunswick very thick bed of graphitic limestone ...
... Canada appears to by these graphitic and Eozoon limestones , an graphitic deposits exist in the continuation tem in the State of New York , while in rock be of this age near St. John , New Brunswick very thick bed of graphitic limestone ...
Pagina 13
... Canada in which Sil rian and Devonian bituminous shales and limestones ha been metamorphosed and converted into graphitic roc not very dissimilar to those in the less altered portions the Laurentian . * In like manner it seems probable ...
... Canada in which Sil rian and Devonian bituminous shales and limestones ha been metamorphosed and converted into graphitic roc not very dissimilar to those in the less altered portions the Laurentian . * In like manner it seems probable ...
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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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