A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 11
The cænæcium , in every case , except in Cristatella , is composed of two distinct
membranes , which must be carefully distinguished from one another — an
internal , the endocyst , which is always soft , transparent , and contractile ; and
an ...
The cænæcium , in every case , except in Cristatella , is composed of two distinct
membranes , which must be carefully distinguished from one another — an
internal , the endocyst , which is always soft , transparent , and contractile ; and
an ...
Página 12
In Paludicella , whose transparent ectocyst admits of a distinct view of all the
contained parts , the fibres are collected into numerous transverse bands ( Pl . X ,
figs . 3 , 4 , v ) , which we may trace throughout the whole extent of the cell . 1 1 1
1 ...
In Paludicella , whose transparent ectocyst admits of a distinct view of all the
contained parts , the fibres are collected into numerous transverse bands ( Pl . X ,
figs . 3 , 4 , v ) , which we may trace throughout the whole extent of the cell . 1 1 1
1 ...
Página 13
The perfectly transparent wide origin of this line gives to the orifice of the cell the
appearance of having a deep notch on one side . In Fredericella a slightly
prominent keel is also apparent , but the notch - like transparent space does not
here ...
The perfectly transparent wide origin of this line gives to the orifice of the cell the
appearance of having a deep notch on one side . In Fredericella a slightly
prominent keel is also apparent , but the notch - like transparent space does not
here ...
Página 14
This gelatinous - looking investment is , however , a true ectocyst ; it consists of a
membranous tunic of great delicacy , apparently enclosing a perfectly transparent
and colourless fluid , probably in the meshes of a sort of areolar tissue .
This gelatinous - looking investment is , however , a true ectocyst ; it consists of a
membranous tunic of great delicacy , apparently enclosing a perfectly transparent
and colourless fluid , probably in the meshes of a sort of areolar tissue .
Página 16
... while those which look towards the vent are thin , membranous , and
transparent , and destitute of cilia . It may be observed , when the polypide is
exserted from its cell , to be in a constant motion , which consists in an alternate
elevation and ...
... while those which look towards the vent are thin , membranous , and
transparent , and destitute of cilia . It may be observed , when the polypide is
exserted from its cell , to be in a constant motion , which consists in an alternate
elevation and ...
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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 cænæcium 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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