A Monograph of the Fresh-water Polyzoa, Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Página 1
... naturalists , separated as a distinct group , and described by Thompson under the name of Polyzoa , and shortly after indicated by Ehrenberg under that of Bryozoa . They are chiefly inhabitants of the sea , where they may be witnessed ...
... naturalists , separated as a distinct group , and described by Thompson under the name of Polyzoa , and shortly after indicated by Ehrenberg under that of Bryozoa . They are chiefly inhabitants of the sea , where they may be witnessed ...
Página 3
... naturalists , that its importance , and its true bearing on systematic zoology , began to be appreciated . The in- vestigations of Trembley and Baker , however , having clearly demonstrated , in the " Polype ŕ Panache , " all the ...
... naturalists , that its importance , and its true bearing on systematic zoology , began to be appreciated . The in- vestigations of Trembley and Baker , however , having clearly demonstrated , in the " Polype ŕ Panache , " all the ...
Página 4
... naturalists was now chiefly directed to the comparison of external characters for the determination of species , and as the grounds of classification . Numerous systems were accordingly from time to time proposed , which , however ...
... naturalists was now chiefly directed to the comparison of external characters for the determination of species , and as the grounds of classification . Numerous systems were accordingly from time to time proposed , which , however ...
Página 6
... naturalists had not yet emancipated themselves from the old notion that the closest affinities of these animals were ... naturalist who had made the matter a special subject of study , while the important division of the Molluscan ...
... naturalists had not yet emancipated themselves from the old notion that the closest affinities of these animals were ... naturalist who had made the matter a special subject of study , while the important division of the Molluscan ...
Página 56
... naturalists detected the statoblasts , which they took for eggs , and observed the escape from them of the young Polyzoon . In 1744 , Trembley published his famous memoirs on fresh - water polypes . In these is a full description of the ...
... naturalists detected the statoblasts , which they took for eggs , and observed the escape from them of the young Polyzoon . In 1744 , Trembley published his famous memoirs on fresh - water polypes . In these is a full description of the ...
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Términos y frases comunes
adherent Alcyonella Alcyonella fungosa Alcyonella stagnorum alimentary canal Allman anatomy animal annulus Ascidian attached become Beneden Bowerbankia Brachiopoda branches branchial sac Brit Brux campanulata cavity cell character cilia cœnćcium crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst embryo endocyst epistome exserted external fibres flabellum fluid fresh-water Polyzoa funiculus ganglion genera genus Gervais hćmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnćus lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed œsophagus organ orifice Original figures ovary ovum Paludicella parieto-vaginal muscles peculiar Pedicellina perigastric space Plumatella repens Polype ŕ Panache polypide Polyzoon portion present Raspail respiratory retraction retractor retractor muscles Rösel seen septa side species specimens statoblasts stomach structure surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph Zoophytes