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 19
Página 23
... perigastric space . The real signification of the perigastric fluid is a point whose determination must be of great importance in the physiology of the Polyzoa . As has just been said , it is by no means homogeneous , and numerous ...
... perigastric space . The real signification of the perigastric fluid is a point whose determination must be of great importance in the physiology of the Polyzoa . As has just been said , it is by no means homogeneous , and numerous ...
Página 24
... 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 their presence on the alimen- tary ...
... 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 their presence on the alimen- tary ...
Página 32
... perigastric space , and thus brought in contact with the ovary . In Paludicella , the ovary occupies the same position as in Alcyonella , forming an irregularly shaped body ( Pl . X , figs . 3 , 4 , 4 ) , adherent to the inner surface ...
... perigastric space , and thus brought in contact with the ovary . In Paludicella , the ovary occupies the same position as in Alcyonella , forming an irregularly shaped body ( Pl . X , figs . 3 , 4 , 4 ) , adherent to the inner surface ...
Página 34
... length , giving way , allows the embryo to escape . The free embryo ( Pl . XI , figs . 32 , 33 , 33 , 33 ' ) now swims actively through the surrounding fluid of the perigastric space . It sometimes remains stationary 34 EMBRYOLOGY .
... length , giving way , allows the embryo to escape . The free embryo ( Pl . XI , figs . 32 , 33 , 33 , 33 ' ) now swims actively through the surrounding fluid of the perigastric space . It sometimes remains stationary 34 EMBRYOLOGY .
Página 35
... perigastric space . It sometimes remains stationary , with the unciliated portion , in which the polypides are suspended , protruded from the ciliated ( Pl . XI , fig . 32 ) ; but most frequently this unciliated portion is withdrawn ...
... perigastric space . It sometimes remains stationary , with the unciliated portion , in which the polypides are suspended , protruded from the ciliated ( Pl . XI , fig . 32 ) ; but most frequently this unciliated portion is withdrawn ...
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