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
... be detected in it . By the action . of the straight and circular fibres , various motions , especially those of flexion and extension , can be transparent membrane in the form of a cup or calyx RESPIRATION AND CIRCULATION . 21.
... be detected in it . By the action . of the straight and circular fibres , various motions , especially those of flexion and extension , can be transparent membrane in the form of a cup or calyx RESPIRATION AND CIRCULATION . 21.
Página 22
... membrane certain delicate anastomosing lines . These appear to indicate the surfaces of contact of cells of which the membrane would thus seem to be composed ; they are par- ticularly evident in Cristatella . It is curious enough that ...
... membrane certain delicate anastomosing lines . These appear to indicate the surfaces of contact of cells of which the membrane would thus seem to be composed ; they are par- ticularly evident in Cristatella . It is curious enough that ...
Página 29
... membrane , had already afforded a fixed line , on which it rolled outwards during eversion , This line constitutes the extreme limit of eversion , and that portion of the invaginated endocyst which lies between it and the mouth of the ...
... membrane , had already afforded a fixed line , on which it rolled outwards during eversion , This line constitutes the extreme limit of eversion , and that portion of the invaginated endocyst which lies between it and the mouth of the ...
Página 32
... however , are opposed to both these views , and it seems to me evident that the eminent professor of Louvain has not seen the true ovary at all . restraining membrane of the ovary , and escape into the 32 GENERATIVE SYSTEM .
... however , are opposed to both these views , and it seems to me evident that the eminent professor of Louvain has not seen the true ovary at all . restraining membrane of the ovary , and escape into the 32 GENERATIVE SYSTEM .
Página 33
... membrane , on whose 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 ...
... membrane , on whose 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 ...
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 crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst Ehrenbergi 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 longitudinal lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed oesophagus 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