The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina 14
... specimens . lines , which I believe to be tubes of Eozoon by matter once bituminous , but now in th graphite . * " Geology of Canada , " 1863 . have been found . It is possible , however ,. 14 THE GEOLOGICAL HISTORY OF PLA.
... specimens . lines , which I believe to be tubes of Eozoon by matter once bituminous , but now in th graphite . * " Geology of Canada , " 1863 . have been found . It is possible , however ,. 14 THE GEOLOGICAL HISTORY OF PLA.
Pagina 15
... specimens from the coal - formation No structures so perfect have as yet been detected in t Laurentian , though in the largest of the three graphi beds at St. John there appear to be fibrous structure which I believe may indicate the ...
... specimens from the coal - formation No structures so perfect have as yet been detected in t Laurentian , though in the largest of the three graphi beds at St. John there appear to be fibrous structure which I believe may indicate the ...
Pagina 16
... of Gaspé , when he met the late Professor Agassiz , and remarked that the specimen was the re- mains of a Devonian tree contemporaneous with his fishes of that age . " How I wish I 16 THE GEOLOGICAL HISTORY OF PLANTS .
... of Gaspé , when he met the late Professor Agassiz , and remarked that the specimen was the re- mains of a Devonian tree contemporaneous with his fishes of that age . " How I wish I 16 THE GEOLOGICAL HISTORY OF PLANTS .
Pagina 18
... specimens of Laurentian plants showing their structure . In any case we have here presented to us the strange and startling fact that the remarkable arrangement of protoplasmic matter and chlorophyll , which enables the vegetable cell ...
... specimens of Laurentian plants showing their structure . In any case we have here presented to us the strange and startling fact that the remarkable arrangement of protoplasmic matter and chlorophyll , which enables the vegetable cell ...
Pagina 20
... specimens from Sweden , and from rocks of similar age in Canada , I confess that I have no faith in their vegetable nature . The oldest plants known to me , and likely to have been of higher grade than Algæ , are specimens kindly ...
... specimens from Sweden , and from rocks of similar age in Canada , I confess that I have no faith in their vegetable nature . The oldest plants known to me , and likely to have been of higher grade than Algæ , are specimens kindly ...
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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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