A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 11-15 de 79
Página 11
... animals , the cœnocium constitutes essen- tially an assemblage of little cells or chambers , of very various form , organically connected with one another . Each chamber lodges a polypide , and its cavity is either shut off from those ...
... animals , the cœnocium constitutes essen- tially an assemblage of little cells or chambers , of very various form , organically connected with one another . Each chamber lodges a polypide , and its cavity is either shut off from those ...
Página 14
... animal has undergone partial desiccation , for then the ectocyst is thrown into folds by losing a portion of the fluid which had been imprisoned in it . Neither Trembley nor Baker takes any notice of this gelatinoid envelope . M ...
... animal has undergone partial desiccation , for then the ectocyst is thrown into folds by losing a portion of the fluid which had been imprisoned in it . Neither Trembley nor Baker takes any notice of this gelatinoid envelope . M ...
Página 17
... animal has been left long without food , the brown matter disappears from the cells , and the stomach becomes colourless . The inner layer of the stomach is thus distinctly glandular , and may be fairly viewed as the representative of a ...
... animal has been left long without food , the brown matter disappears from the cells , and the stomach becomes colourless . The inner layer of the stomach is thus distinctly glandular , and may be fairly viewed as the representative of a ...
Página 18
... animal , with a clear greenish - blue fluid . With the exception of the mouth and upper portion of the œsophagus , no part of the alimentary canal is ciliated in the phylactolæmatous fresh - water Polyzoa . In Paludicella however , the ...
... animal , with a clear greenish - blue fluid . With the exception of the mouth and upper portion of the œsophagus , no part of the alimentary canal is ciliated in the phylactolæmatous fresh - water Polyzoa . In Paludicella however , the ...
Página 21
... animal appears to be unisexual , the testis occupying the place of the ovary in other individuals . The stalk on which the cell containing the polypide is elevated , constitutes a very characteristic feature of Pedicellina . It is a ...
... animal appears to be unisexual , the testis occupying the place of the ovary in other individuals . The stalk on which the cell containing the polypide is elevated , constitutes a very characteristic feature of Pedicellina . It is a ...
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