A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Volumen28 |
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Página 5
He then goes on to compare the walls of the body cavity in Gorgonia, his,
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, his,
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polypide can be protruded from its cell, and again withdrawn into it, and the ...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polypide can be protruded from its cell, and again withdrawn into it, and the ...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, 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
They are about the s^th 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 corpuscle ...
They are about the s^th 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 corpuscle ...
Página 14
The septum thus formed is rendered complete by the aperture in its centre being
closed by a 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
...
The septum thus formed is rendered complete by the aperture in its centre being
closed by a 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
...
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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 Alcyonella Alcyonella fungosa Alcyonella stagnorum alimentary canal Allman anatomy animal annulus Ascidian attached become Beneden Bowerbankia Brachiopoda branches branchial sac Brit Brux cavity cell character.—Coenoecium cilia coenoecium crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst embryo endocyst epistome exserted external fibres flabellum fluid Flustrae fresh-water Polyzoa funiculus ganglion gemmae genera genus Gervais Hancock Hist homologous intestine invaginated l'Acad Lamarck layer Leidy longitudinal lophophore Lophopus crystallinus magnified margin membrane memoir Meyen mouth Naisa naturalists observed oesophagus organs orifice Original figures ovary ovum Pallas Paludicella parieto-vaginal muscles peculiar Pedicellina perigastric space Plumatella repens Polype a Panache polypide Polyzoon portion posterior present Raspail resemblance respiratory retraction retractor retractor muscles Rosel seen septa side specimens statoblasts stomach structure surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph
Información bibliográfica
| Título | A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Volumen28 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 Tema 28 de 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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