A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Página 21
... ciliated on its oral aspect , but not pro- vided with muscles like the epistome of the ordinary phylactolæmatous Polyzoa ... cilia , which are especially developed in the vicinity of the pylorus . The ovary is an irregularly shaped mass ...
... ciliated on its oral aspect , but not pro- vided with muscles like the epistome of the ordinary phylactolæmatous Polyzoa ... cilia , which are especially developed in the vicinity of the pylorus . The ovary is an irregularly shaped mass ...
Página 22
... 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 the surrounding structures . Its situation would suggest the proba- bility of ...
... 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 the surrounding structures . Its situation would suggest the proba- bility of ...
Página 23
... cilia or other moving power , compared them to the currents in the cells of Chara . That they are produced partly by the action of vibratile cilia , and partly by the muscular * Meyen , Naturgeschichte der Polypen , Isis , 1828 . " Loc ...
... cilia or other moving power , compared them to the currents in the cells of Chara . That they are produced partly by the action of vibratile cilia , and partly by the muscular * Meyen , Naturgeschichte der Polypen , Isis , 1828 . " Loc ...
Página 24
... cilia , not only on the walls of the perigastric space , but on the external surface of the alimentary canal . I cannot , however , confirm their existence in the latter situation ; indeed , my own observations are entirely opposed to ...
... cilia , not only on the walls of the perigastric space , but on the external surface of the alimentary canal . I cannot , however , confirm their existence in the latter situation ; indeed , my own observations are entirely opposed to ...
Página 29
... cilia which instantly commence their untiring vibration on the sides of the tentacula . The mechanism of retraction is easily understood . Here the perigastric fluid being no * Observations on the Minute Structure of some of the higher ...
... cilia which instantly commence their untiring vibration on the sides of the tentacula . The mechanism of retraction is easily understood . Here the perigastric fluid being no * Observations on the Minute Structure of some of the higher ...
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