A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 22
... seen this space rapidly empty itself on the removal of the animal from the water
, and again fill on restoring it to its natural element . Van Benedent believed that
he had detected in Alcyonella apertures , which he names " bouches aquifères ...
... seen this space rapidly empty itself on the removal of the animal from the water
, and again fill on restoring it to its natural element . Van Benedent believed that
he had detected in Alcyonella apertures , which he names " bouches aquifères ...
Página 23
... he tells us , he has witnessed the escape of an egg in Alcyonella ; * and
Siebold admits the correctness of this statement , and considers the aperture
described by Meyen to be that through which the external water is admitted to the
interior .
... he tells us , he has witnessed the escape of an egg in Alcyonella ; * and
Siebold admits the correctness of this statement , and considers the aperture
described by Meyen to be that through which the external water is admitted to the
interior .
Página 32
In Alcyonella and Paludicella , I have succeeded in making a careful examination
of the generative system . In each of these both ovary and testis are found in the
same cell . * During the months of July and August there may frequently be seen
...
In Alcyonella and Paludicella , I have succeeded in making a careful examination
of the generative system . In each of these both ovary and testis are found in the
same cell . * During the months of July and August there may frequently be seen
...
Página 33
It exactly resembles that already described as attached to the fundus of the
stomach and bottom of the cell in Alcyonella . The testicle in Paludicella is an
irregularly lobed mass ( Pl . X , figs . 3 , 4 , X ) , attached , like the ovary , to the
inner ...
It exactly resembles that already described as attached to the fundus of the
stomach and bottom of the cell in Alcyonella . The testicle in Paludicella is an
irregularly lobed mass ( Pl . X , figs . 3 , 4 , X ) , attached , like the ovary , to the
inner ...
Página 34
Diagrams representing the chorization process in the development of the embryo
of Alcyonella . The stage represented in 3 has not been actually seen , but seems
to be the only one that will supply the missing link . Towards the opening ...
Diagrams representing the chorization process in the development of the embryo
of Alcyonella . The stage represented in 3 has not been actually seen , but seems
to be the only one that will supply the missing link . Towards the opening ...
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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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