A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 1
... polypes , 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 .
... polypes , 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 .
Página 11
... shaped cells , widely separated from each other by an intervening substance
towards the posterior part of the cćnćcium , but more closely approximated
towards the orifices . These cells are filled with a perfectly colourless and
transparent ...
... shaped cells , widely separated from each other by an intervening substance
towards the posterior part of the cćnćcium , but more closely approximated
towards the orifices . These cells are filled with a perfectly colourless and
transparent ...
Página 12
These are situated on its inner surface , where they constitute a well - marked
layer composed of a network of transverse and longitudinal fibres over the whole
extent of the endocyst . I have even succeeded in separating this network as a ...
These are situated on its inner surface , where they constitute a well - marked
layer composed of a network of transverse and longitudinal fibres over the whole
extent of the endocyst . I have even succeeded in separating this network as a ...
Página 18
... we may perceive that the peculiar peristaltic action of the walls is more marked
in it than in any other part of the gastric cavity , while it is every now and then
separated from the rest of this cavity by a momentary hour - glass constriction .
... we may perceive that the peculiar peristaltic action of the walls is more marked
in it than in any other part of the gastric cavity , while it is every now and then
separated from the rest of this cavity by a momentary hour - glass constriction .
Página 19
nutritious ' elements , portions in the form of roundish pellets become separated
at intervals from the mass , and are slowly propelled along the tube towards the
anus , where , having arrived , they are suddenly ejected into the surrounding ...
nutritious ' elements , portions in the form of roundish pellets become separated
at intervals from the mass , and are slowly propelled along the tube towards the
anus , where , having arrived , they are suddenly ejected into the surrounding ...
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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
adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cćnćcium 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 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 represented 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 | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
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