A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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In fixing the exact limits of 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 ...
In fixing the exact limits of 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 ...
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It is possible that some of the forms here described as 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 ...
It is possible that some of the forms here described as 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 ...
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... were at last , by the nearly simultaneous investigations of several 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 .
... were at last , by the nearly simultaneous investigations of several 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 .
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Historical view of the facts which finally led to the establishment of the Polyzoa as a distinct class . It was in the last year of the sixteenth century that the Neapolitan , Ferante Imperato , asserted that corals possessed the nature ...
Historical view of the facts which finally led to the establishment of the Polyzoa as a distinct class . It was in the last year of the sixteenth century that the Neapolitan , Ferante Imperato , asserted that corals possessed the nature ...
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A Monograph of the Fresh-water Polyzoa: Including All the Known ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
A Monograph of the Fresh-Water Polyzoa, Including All the Known Species ... George James Allman Sin vista previa disponible - 2009 |
Términos y frases comunes
action adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella described detected disc distinct Dumortier ectocyst edit endocyst entire epistome examined existence extending external extremity fibres fluid Fredericella fresh-water Polyzoa genera genus Gervais gives Hancock Hist important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organ orifice Original figures Paludicella passes Plumatella Plumatella repens Polype polypide Polyzoon portion present published relations repens resemblance retraction retractor Rösel seen separated sheath side space species specimens statoblasts stomach stones structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young
Información bibliográfica
| Título | A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign Volumen18 de ¬The Ray Society |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
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