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 12
... layer composed of a network of transverse and longitudinal fibres over the whole extent of the endocyst . I have even succeeded in separating this network as a continuous layer . There can be no doubt that these fibres of the ...
... layer composed of a network of transverse and longitudinal fibres over the whole extent of the endocyst . I have even succeeded in separating this network as a continuous layer . There can be no doubt that these fibres of the ...
Página 14
... layer of somewhat elongated cellules placed perpendicularly to its surface . The body which thus closes up the centre of the annular septum has , without doubt , some office to perform besides that of simply com- pleting the septum ...
... layer of somewhat elongated cellules placed perpendicularly to its surface . The body which thus closes up the centre of the annular septum has , without doubt , some office to perform besides that of simply com- pleting the septum ...
Página 17
... layer ( Pl . III , fig . 7 k ) , which is thrown into large longitudinal rugć . These rugć become less decided towards the fundus of the stomach , and in Paludicella they are entirely absent . This internal layer is composed of easily ...
... layer ( Pl . III , fig . 7 k ) , which is thrown into large longitudinal rugć . These rugć become less decided towards the fundus of the stomach , and in Paludicella they are entirely absent . This internal layer is composed of easily ...
Página 18
... layers ( Pl . III , fig . 7 , X ' , μ ' ) . These correspond to the middle and external layers of the stomach , the former being here largely developed ( A ' ) , while the internal or hepatic layer of the stomach is entirely absent ...
... layers ( Pl . III , fig . 7 , X ' , μ ' ) . These correspond to the middle and external layers of the stomach , the former being here largely developed ( A ' ) , while the internal or hepatic layer of the stomach is entirely absent ...
Página 20
... layers ( Pl . IX , fig . 5 ) enter into the structure of the tentacula . The external layer consists of rounded cells filled with a colourless fluid , and often presenting a bright nucleus . Some of those cells which lie upon the back ...
... layers ( Pl . IX , fig . 5 ) enter into the structure of the tentacula . The external layer consists of rounded cells filled with a colourless fluid , and often presenting a bright nucleus . Some of those cells which lie upon the back ...
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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 character cilia cœnćcium 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 hćmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnćus 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 ŕ Panache polypide Polyzoon portion 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