A Monograph of the Fresh-water Polyzoa, Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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... the species , some difficulty has been experienced . I have however , deemed it best to describe as a distinct species every well - marked variation of form which I could not find connected by intermediate gradations with.
... the species , some difficulty has been experienced . I have however , deemed it best to describe as a distinct species every well - marked variation of form which I could not find connected by intermediate gradations with.
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... distinct species may afterwards prove to be only varieties of one and the same specific group ; but as they all possess a real existence , and are truly distinct forms , it was thought necessary , especially in so small a group as the ...
... distinct species may afterwards prove to be only varieties of one and the same specific group ; but as they all possess a real existence , and are truly distinct forms , it was thought necessary , especially in so small a group as the ...
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... 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 under numerous plant - like ...
... 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 under numerous plant - like ...
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... distinct class . It was in the last year of the sixteenth century that the Neapolitan , Ferante Imperato , asserted that corals possessed the nature of animals . * The announcement had passed away nearly unheeded ; and if at the end of ...
... distinct class . It was in the last year of the sixteenth century that the Neapolitan , Ferante Imperato , asserted that corals possessed the nature of animals . * The announcement had passed away nearly unheeded ; and if at the end of ...
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... . III . + Employment for the Microscope , ' London , 1753 . + ' Mémoires pour servir à l'Histoire des Insectes , ' Paris , 1742 , tome xvi , Preface . the same field , and his researches , which were A DISTINCT GROUP . 3.
... . III . + Employment for the Microscope , ' London , 1753 . + ' Mémoires pour servir à l'Histoire des Insectes , ' Paris , 1742 , tome xvi , Preface . the same field , and his researches , which were A DISTINCT GROUP . 3.
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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 cilia cœnocium 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 hæmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnæus 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 à Panache polypide Polyzoon portion posterior 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