A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Resultados 6-10 de 26
Página 16
... organ ( e ) of very peculiar formation . This organ arches over the mouth , and may be aptly enough compared in shape to the epiglottis of certain mammifers . The cavity in its interior communicates through an opening ( e ) in the ...
... organ ( e ) of very peculiar formation . This organ arches over the mouth , and may be aptly enough compared in shape to the epiglottis of certain mammifers . The cavity in its interior communicates through an opening ( e ) in the ...
Página 18
... organ , seizes a portion of the alimentary mass , and retains it for a moment by an hour - glass restriction separate from the remainder , and then powerfully contracting on it , forces it back among the other contents of the stomach ...
... organ , seizes a portion of the alimentary mass , and retains it for a moment by an hour - glass restriction separate from the remainder , and then powerfully contracting on it , forces it back among the other contents of the stomach ...
Página 19
... Organs of Respiration and Circulation . Upon the tentacular crown and the walls of the perigastric space would seem , among the Polyzoa , chiefly to devolve the function of bringing under the influence of the aërating medium the ...
... Organs of Respiration and Circulation . Upon the tentacular crown and the walls of the perigastric space would seem , among the Polyzoa , chiefly to devolve the function of bringing under the influence of the aërating medium the ...
Página 20
... organ ; this is particularly evident in Cristatella . The internal layer is a delicate transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting an open crescent ...
... organ ; this is particularly evident in Cristatella . The internal layer is a delicate transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting an open crescent ...
Página 22
... organ in the form of a minute tubular cavity clothed with actively vibrating cilia . I was unable to follow this organ through its whole extent , or determine its exact relations , as it appeared to lose itself beneath the opacity of ...
... organ in the form of a minute tubular cavity clothed with actively vibrating cilia . I was unable to follow this organ through its whole extent , or determine its exact relations , as it appeared to lose itself beneath the opacity of ...
Otras ediciones - Ver todas
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 Alcyonella Alcyonella fungosa Alcyonella stagnorum alimentary canal Allman anatomy animal annulus Ascidian attached become Beneden Bowerbankia Brachiopoda branches branchial sac Brit Brux campanulata cavity cell cilia cœnocium crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst embryo endocyst epistome exserted external fibres flabellum fluid fresh-water Polyzoa funiculus ganglion genera genus Gervais hæmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnæus lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed œsophagus organ orifice Original figures ovary ovum Paludicella parieto-vaginal muscles peculiar Pedicellina perigastric space Plumatella repens Polype à Panache polypide Polyzoon portion posterior present Raspail respiratory retraction retractor retractor muscles Rösel seen septa side species specimens statoblasts stomach structure surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph Zoophytes