A Monograph of the Freshwater Polyzoa, Including All the Known Species, Both British and Foreign |
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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, it is ...
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, it is ...
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
conveyed ...
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
conveyed ...
Página 21
Nervous filaments, and certain bands, probably muscular, to be presently
described, may be traced as far as the root of each tentacle, and doubtless also
enter into its structure. In Cristatella, a minute cavity, which looks as if it were cut
off from ...
Nervous filaments, and certain bands, probably muscular, to be presently
described, may be traced as far as the root of each tentacle, and doubtless also
enter into its structure. In Cristatella, a minute cavity, which looks as if it were cut
off from ...
Página 22
Between the oesophagus and rectum, but separated from the latter by the whole
mass of the generative system, is the nervous ganglion, close to which, and lying
between it and the oesophagus, is a peculiar organ in the form of a minute ...
Between the oesophagus and rectum, but separated from the latter by the whole
mass of the generative system, is the nervous ganglion, close to which, and lying
between it and the oesophagus, is a peculiar organ in the form of a minute ...
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A Monograph of the Fresh-water Polyzoa: Including All the Known ..., Volumen28 George James Allman Vista de fragmentos - 1856 |
A Monograph of the Fresh-water Polyzoa: Including All the Known Species ... George James Allman Vista de fragmentos - 1856 |
Términos y frases comunes
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance attached become Beneden bodies branches branchial British canal cavity cell characters cilia closely coenoecium complete condition connected consists constitutes contained continuous 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 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 resemblance retraction retractor 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 Freshwater Polyzoa, Including All the Known Species, Both British and Foreign Volumen18 de ¬The Ray Society |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
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