A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 74
subalpine lakes or of rapid rivulets , where , by close adhesion to the under
surface of stones , they avoid the danger of being carried away by the current of
the stream ; while others prefer slowly running rivers or the sluggish waters of
canals ...
subalpine lakes or of rapid rivulets , where , by close adhesion to the under
surface of stones , they avoid the danger of being carried away by the current of
the stream ; while others prefer slowly running rivers or the sluggish waters of
canals ...
Página 99
... indeed , the very same specimen will often exhibit both at the same time ,
continuing closely adherent to the stone or ... found only on the under side of
stones , or in such other situations as are not exposed to the direct influence of
daylight .
... indeed , the very same specimen will often exhibit both at the same time ,
continuing closely adherent to the stone or ... found only on the under side of
stones , or in such other situations as are not exposed to the direct influence of
daylight .
Página 102
On the under side of flat stones in running water . LOCALITY . - Schuylkill River ,
Philadelphia . Dr. Leidy . “ This species of Plumatella is as limpid as the water in
which it lives ; and it resembles rows of colourless vesicles with a whitish line ...
On the under side of flat stones in running water . LOCALITY . - Schuylkill River ,
Philadelphia . Dr. Leidy . “ This species of Plumatella is as limpid as the water in
which it lives ; and it resembles rows of colourless vesicles with a whitish line ...
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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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