The Geological History of PlantsD. Appleton & Company, 1892 - 294 pagini |
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Pagina 11
... hundred feet , it is * Paper by the author on Laurentian Graphite , " Journal of London Geological Society , " 1876 . scarcely an exaggeration to maintain that the quantity of carbon LAURENTIAN AND EARLY PALEOZOIC . 11.
... hundred feet , it is * Paper by the author on Laurentian Graphite , " Journal of London Geological Society , " 1876 . scarcely an exaggeration to maintain that the quantity of carbon LAURENTIAN AND EARLY PALEOZOIC . 11.
Pagina 12
... and limestones . Matthew in " Quarterly Journal of the Geological Society , " vol . " Acadian Geology , " p . 662 . xxi . , p . 423 . * We may compare the disseminated graphite to that which 12 THE GEOLOGICAL HISTORY OF PLANTS .
... and limestones . Matthew in " Quarterly Journal of the Geological Society , " vol . " Acadian Geology , " p . 662 . xxi . , p . 423 . * We may compare the disseminated graphite to that which 12 THE GEOLOGICAL HISTORY OF PLANTS .
Pagina 21
... Journal of the Geo- logical Society , " of London , a remark- able tree from the Lower Erian of Gaspé , under the name Prototaxites , but for which I now prefer the name Nematophy- ton . When in Lon- MAM FIG . 1. - Protannularia ...
... Journal of the Geo- logical Society , " of London , a remark- able tree from the Lower Erian of Gaspé , under the name Prototaxites , but for which I now prefer the name Nematophy- ton . When in Lon- MAM FIG . 1. - Protannularia ...
Pagina 22
... , mineralised after long maceration in water , I was inclined to regard Prototaxites , or , as I " Journal of the Geological Society , " August , 1881 . have more recently named it , Nematophyton , as a. 22 THE GEOLOGICAL HISTORY OF PLANTS ...
... , mineralised after long maceration in water , I was inclined to regard Prototaxites , or , as I " Journal of the Geological Society , " August , 1881 . have more recently named it , Nematophyton , as a. 22 THE GEOLOGICAL HISTORY OF PLANTS ...
Pagina 25
... Erian Flora of Canada , " 1871 and 1882 , for full description of these fossils . + " American Journal of Science , " 1878 . gard the supposed stigmaria - like roots as really stems LAURENTIAN AND EARLY PALEOZOIC . 25.
... Erian Flora of Canada , " 1871 and 1882 , for full description of these fossils . + " American Journal of Science , " 1878 . gard the supposed stigmaria - like roots as really stems LAURENTIAN AND EARLY PALEOZOIC . 25.
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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