A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 5
He then goes on to compare the walls of the body cavity in Gorgonia , Isis ,
Alcyonium , & c . , to the tunics of an Ascidian or the mantle of an ordinary Mollusc
, a comparison which plainly shows that he had no idea whatever of the relation
in ...
He then goes on to compare the walls of the body cavity in Gorgonia , Isis ,
Alcyonium , & c . , to the tunics of an Ascidian or the mantle of an ordinary Mollusc
, a comparison which plainly shows that he had no idea whatever of the relation
in ...
Página 11
Each chamber lodges a polypide , and its cavity is either shut off from those of the
neighbouring chambers , or freely communicates with them . In every instance *
the polypide can be protruded from its cell , and again withdrawn into it , and the
...
Each chamber lodges a polypide , and its cavity is either shut off from those of the
neighbouring chambers , or freely communicates with them . In every instance *
the polypide can be protruded from its cell , and again withdrawn into it , and the
...
Página 12
In the midst of this a minute vacuola next shows itself ; this becomes the cell -
cavity , and gradually increases in size with the enlarging cell ; the nucleus is
persistent , remaining attached to the cell - wall . For reasons to be presently
mentioned ...
In the midst of this a minute vacuola next shows itself ; this becomes the cell -
cavity , and gradually increases in size with the enlarging cell ; the nucleus is
persistent , remaining attached to the cell - wall . For reasons to be presently
mentioned ...
Página 13
They are about the Gooth of an inch in the longer diameter , larger at one end
than at the other , and in the large end they appear to contain a minute cavity ( fig
. 14 ) , which under the action of acetic acid dilates and fills nearly the entire ...
They are about the Gooth of an inch in the longer diameter , larger at one end
than at the other , and in the large end they appear to contain a minute cavity ( fig
. 14 ) , which under the action of acetic acid dilates and fills nearly the entire ...
Página 14
... peculiar body , which projects into the cavity of the cell at each side . The
structure of this body is remarkable ; it consists of a central mass , surrounded by
a distinct layer of somewhat elongated cellules placed perpendicularly to its
surface .
... peculiar body , which projects into the cavity of the cell at each side . The
structure of this body is remarkable ; it consists of a central mass , surrounded by
a distinct layer of somewhat elongated cellules placed perpendicularly to its
surface .
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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 alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cćnćcium canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous 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 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 | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
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