The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina 4
Sir John William Dawson. 05 4 THE GEOLOGICAL HISTORY OF PLA The evidence is similar to that obtain mann on the site of Troy , where , in digging cessive layers of débris , he found the object successive occupants of the site , from the ...
Sir John William Dawson. 05 4 THE GEOLOGICAL HISTORY OF PLA The evidence is similar to that obtain mann on the site of Troy , where , in digging cessive layers of débris , he found the object successive occupants of the site , from the ...
Pagina 11
... similar abundance at several other horizons , in beds of limestone which have been ascertained by Sir W. E. Logan to have an aggregate thickness of thirty - five hundred feet , it is * Paper by the author on Laurentian Graphite ...
... similar abundance at several other horizons , in beds of limestone which have been ascertained by Sir W. E. Logan to have an aggregate thickness of thirty - five hundred feet , it is * Paper by the author on Laurentian Graphite ...
Pagina 12
... matter in bituminous shales and lir * Matthew in " Quarterly Journal of the Geological S xxi . , p . 423. " Acadian Geology , " p . 662 . F PLANTS . hat the quantity of hat in similar ! THE GEOLOGICAL HISTORY OF PLAN 12.
... matter in bituminous shales and lir * Matthew in " Quarterly Journal of the Geological S xxi . , p . 423. " Acadian Geology , " p . 662 . F PLANTS . hat the quantity of hat in similar ! THE GEOLOGICAL HISTORY OF PLAN 12.
Pagina 13
... similar to bituminous aphite near nderoga in , and else- one might of Rhode ional , and graphite nce to the mestones . Society , " vol . We may compare the disseminated graphite to th which we find in those districts of Canada in which ...
... similar to bituminous aphite near nderoga in , and else- one might of Rhode ional , and graphite nce to the mestones . Society , " vol . We may compare the disseminated graphite to th which we find in those districts of Canada in which ...
Pagina 14
... similar demands on vegetable deoxidising agent are made by the beds metallic sulphides of the Laurentian , tho the latter are no doubt of later date than th rocks themselves . It would be very desirable to confirm sucl as those above ...
... similar demands on vegetable deoxidising agent are made by the beds metallic sulphides of the Laurentian , tho the latter are no doubt of later date than th rocks themselves . It would be very desirable to confirm sucl as those above ...
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Termeni și expresii frecvente
Acrogens aërial roots Algæ allied America appear Archæopteris arctic areoles bark beds belong bituminous branches Brongniart bundles Calamites Canada Carboniferous Caulopteris cellular character clay climate coal coal-formation cones conifers Cordaites cycads cylinder Dadoxylon Dawson Demy 8vo deposits described Devonian dicotyledonous Eocene Erian Europe exogenous Fcap ferns flora formation forms fossil plants fronds fructification fruit Gaspé genera genus Geological Society Greenland Heer hemisphere Illustrations land Laramie leaf-bases leaf-scars leaves Lepidodendron Lepidophloios Lesquereux limestone Lower Carboniferous Lycopods macrospores medullary rays Mesozoic Middle Miocene modern northern Nova Scotia occur outer Palæozoic period Permian pines pinnules pith present probably Prof Psilophyton referred resemble Rhizocarps ribbed rocks sandstones scalariform Sequoia shales Sigillaria Silurian similar Small crown 8vo species specimens Sphenophyllum Sphenopteris Sporangites spore-cases spores sporocarps stems Sternbergia structure Tertiary thick tion tissue transverse tree-ferns trees trunks types Upper Cretaceous vascular scar vegetable wood woody
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