A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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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
In specimens of this Polyzoon which had been kept for a few days , and
occasionally in some just captured , multitudes of minute oval brilliant corpuscles
were seen to have been developed in the endocyst throughout its whole extent .
In specimens of this Polyzoon which had been kept for a few days , and
occasionally in some just captured , multitudes of minute oval brilliant corpuscles
were seen to have been developed in the endocyst throughout its whole extent .
Página 18
If a polypide of Plumatella repens be watched while in an exserted state ,
different kinds of Infusoria and other minute organic bodies may be observed to
be whirled along in the vortices caused by the action of the tentacular cilia , and ...
If a polypide of Plumatella repens be watched while in an exserted state ,
different kinds of Infusoria and other minute organic bodies may be observed to
be whirled along in the vortices caused by the action of the tentacular cilia , and ...
Página 21
In Cristatella , a minute cavity , which looks as if it were cut off from the rest of the
tube , may be very plainly seen in the extremity of each tentacle ; this condition
would also seem to exist in other genera , but it is nowhere so well marked as in ...
In Cristatella , a minute cavity , which looks as if it were cut off from the rest of the
tube , may be very plainly seen in the extremity of each tentacle ; this condition
would also seem to exist in other genera , but it is nowhere so well marked as in ...
Página 22
... from the latter by the whole mass of the generative system , is the nervous
ganglion , close to which , and lying between it and the esophagus , is a peculiar
organ in the form of a minute tubular cavity clothed with actively vibrating cilia .
... from the latter by the whole mass of the generative system , is the nervous
ganglion , close to which , and lying between it and the esophagus , is a peculiar
organ in the form of a minute tubular cavity clothed with actively vibrating cilia .
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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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