A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 6-10 de 27
Página 21
... internally . From this arrangement it is obvious , that the exsertion and retraction of the polypide must be very ... internal surface of the stomach , is here confined to the anterior portion of this sac , in the space between the ...
... internally . From this arrangement it is obvious , that the exsertion and retraction of the polypide must be very ... internal surface of the stomach , is here confined to the anterior portion of this sac , in the space between the ...
Página 27
... internal structures soon become concealed under the increasing opacity of the superjacent tissues . In the more transparent genus Lophopus , they seem to be present throughout the whole endocyst . By their action they evidently ...
... internal structures soon become concealed under the increasing opacity of the superjacent tissues . In the more transparent genus Lophopus , they seem to be present throughout the whole endocyst . By their action they evidently ...
Página 33
... internal surface the contents appear frequently to be aggregated in a coarser granular layer ( Pl . XI , figs . 26 , 27 ) . It presents a large germinal vesicle , and a very distinct germinal spot . After a time the germinal vesicle and ...
... internal surface the contents appear frequently to be aggregated in a coarser granular layer ( Pl . XI , figs . 26 , 27 ) . It presents a large germinal vesicle , and a very distinct germinal spot . After a time the germinal vesicle and ...
Página 35
... size , and the gemma ( fig . 3 ) is now found to consist of an external envelope , continuous with the ectocyst of the parent - cell , and of a thick , fleshy lining , continuous with the endocyst ; this internal GEMMATION . 35.
... size , and the gemma ( fig . 3 ) is now found to consist of an external envelope , continuous with the ectocyst of the parent - cell , and of a thick , fleshy lining , continuous with the endocyst ; this internal GEMMATION . 35.
Página 36
... internal tunic has numerous large , round , nucleated cells distributed through its substance , and internally it presents an uneven surface . The two tunics of the gemma are to become the ectocyst and endocyst of the future cell . By ...
... internal tunic has numerous large , round , nucleated cells distributed through its substance , and internally it presents an uneven surface . The two tunics of the gemma are to become the ectocyst and endocyst of the future cell . By ...
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