A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 43
Guided by this relation , an important step was finally taken by M. MilneEdwards
in distinguishing two primary series in the mollusca , characterised mainly by the
relative grade of perfection of the nervous and circulatory systems . One of these
...
Guided by this relation , an important step was finally taken by M. MilneEdwards
in distinguishing two primary series in the mollusca , characterised mainly by the
relative grade of perfection of the nervous and circulatory systems . One of these
...
Página 48
However interesting the hippocrepian Polyzoa may be in directly indicating the
relations here dwelt on , the infundibulate genera present no difficulty , for the
orbicular lophophore , after all , is but an unimportant modification of the
crescentic ...
However interesting the hippocrepian Polyzoa may be in directly indicating the
relations here dwelt on , the infundibulate genera present no difficulty , for the
orbicular lophophore , after all , is but an unimportant modification of the
crescentic ...
Página 54
indicate homological identity , though we should be cautious in concluding as to
homological relations from mere ... not only in form but in position and relation to
surrounding parts , though the organs themselves be fundamentally different ...
indicate homological identity , though we should be cautious in concluding as to
homological relations from mere ... not only in form but in position and relation to
surrounding parts , though the organs themselves be fundamentally different ...
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A Monograph of the Fresh-water Polyzoa: Including All the Known ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
Términos y frases comunes
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British canal cavity cell characters cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella crown 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 important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organs 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, Tema 28 A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, George James Allman Volumen13 de DE-601)130488305: Ray Society Publications, Ray Society Ray Society, Ray Society Volumen28 de Ray society ... [Publications |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | Universidad de Michigan |
| Digitalizado | 13 Feb. 2012 |
| Largo | 119 páginas |
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