A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Volumen28 |
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Página 2
... a term which up to the present day has been in general adoption. It was just at
this time that Abraham Trembley was engaged in his famous experiments on the
Hydra, which Leeuwenhock had originally discovered, attached to the leaves ...
... a term which up to the present day has been in general adoption. It was just at
this time that Abraham Trembley was engaged in his famous experiments on the
Hydra, which Leeuwenhock had originally discovered, attached to the leaves ...
Página 10
Polypide completely retractile; evagination perfect ; a circle of setae attached to
the in- invertible portion, and acting as an operculum in the retracted state.
Polypide completely retractile; -| evagination perfect; orificeof V the cell with a
moveable ...
Polypide completely retractile; evagination perfect ; a circle of setae attached to
the in- invertible portion, and acting as an operculum in the retracted state.
Polypide completely retractile; -| evagination perfect; orificeof V the cell with a
moveable ...
Página 11
7 ; X, fig. 4, a) lines the interior of the cells, and when it arrives at their apertures
would protrude beyond the ectocyst were it not that it here becomes invaginated
or inverted into itself, and then terminates by being attached round the base of
the ...
7 ; X, fig. 4, a) lines the interior of the cells, and when it arrives at their apertures
would protrude beyond the ectocyst were it not that it here becomes invaginated
or inverted into itself, and then terminates by being attached round the base of
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 14
The part of the ectocyst to which the ribs are attached is carried inwards during
extreme retraction of the polypide. These ribs I look upon as the true homologue
of the seta which crown the cell in Bowerbankia and other ctenostomatous ...
The part of the ectocyst to which the ribs are attached is carried inwards during
extreme retraction of the polypide. These ribs I look upon as the true homologue
of the seta which crown the cell in Bowerbankia and other ctenostomatous ...
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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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