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 6
... therefore, which I have employed in the present Memoir.f Notwithstanding,
however, the completeness with which the ascidian type of structure had now
been recognised in the Polyzoa, naturalists had not yet emancipated themselves
from ...
... therefore, which I have employed in the present Memoir.f Notwithstanding,
however, the completeness with which the ascidian type of structure had now
been recognised in the Polyzoa, naturalists had not yet emancipated themselves
from ...
Página 9
... of a blood-vascular system, I shall call that region of a Polyzoon on which the
nervous ganglion lies the " neural," and the opposite region, that, namely, which
corresponds to the part of an Ascidian which contains the heart, the " haemal.
... of a blood-vascular system, I shall call that region of a Polyzoon on which the
nervous ganglion lies the " neural," and the opposite region, that, namely, which
corresponds to the part of an Ascidian which contains the heart, the " haemal.
Página 40
... the ephippia. * Srarue, /3Aa<xr>j. f ' Quarterly Journal of Microscopical Science
/ Oct., 1852. Fig. 7. Plan of an Ascidian Tunicate — transverse section. 40
GEMMATION.
... the ephippia. * Srarue, /3Aa<xr>j. f ' Quarterly Journal of Microscopical Science
/ Oct., 1852. Fig. 7. Plan of an Ascidian Tunicate — transverse section. 40
GEMMATION.
Página 43
Under the one head it is maintained that the respiratory sac of the Ascidian has
its representative in the pharynx of the Polyzoon, and that the rudimentary
tentacula at the orifice of this sac are homologous with the tentacula of the
Polyzoon.
Under the one head it is maintained that the respiratory sac of the Ascidian has
its representative in the pharynx of the Polyzoon, and that the rudimentary
tentacula at the orifice of this sac are homologous with the tentacula of the
Polyzoon.
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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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