A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 3
It consisted of a lobed jelly - like mass , from which protruded numerous polypoid bodies , each characterised by the possession of an elegant crown of tentacula borne on the margin of a crescent - shaped disc .
It consisted of a lobed jelly - like mass , from which protruded numerous polypoid bodies , each characterised by the possession of an elegant crown of tentacula borne on the margin of a crescent - shaped disc .
Página 11
... the power of protrusion and retraction is very imperfect , and is here limited to such change of position as is connected with a slight extension and flexion of the oesophagus . consist almost entirely of bodies exactly resembling ...
... the power of protrusion and retraction is very imperfect , and is here limited to such change of position as is connected with a slight extension and flexion of the oesophagus . consist almost entirely of bodies exactly resembling ...
Página 12
consist almost entirely of bodies exactly resembling the nuclei of the cells ; some of these intercellular nuclei contain two nucleoli , and seem to be undergoing division , while round others a young cell may be seen in various stages ...
consist almost entirely of bodies exactly resembling the nuclei of the cells ; some of these intercellular nuclei contain two nucleoli , and seem to be undergoing division , while round others a young cell may be seen in various stages ...
Página 13
The situation of these bodies in a tubular network in the substance of the endocyst is a fact of great interest . It is nearly certain that whatever may have been the origin of the corpuscles , they found the tubes already existing for ...
The situation of these bodies in a tubular network in the substance of the endocyst is a fact of great interest . It is nearly certain that whatever may have been the origin of the corpuscles , they found the tubes already existing for ...
Página 18
If a polypide of Plumatella repens be watched while in an exserted state , different kinds of Infusoria and other minute organic bodies may be observed to be whirled along in the vortices caused by the action of the tentacular cilia ...
If a polypide of Plumatella repens be watched while in an exserted state , different kinds of Infusoria and other minute organic bodies may be observed to be whirled along in the vortices caused by the action of the tentacular cilia ...
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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
action adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella described detected disc distinct Dumortier ectocyst edit endocyst entire epistome examined existence extending external extremity fibres fluid Fredericella fresh-water Polyzoa genera genus Gervais gives Hancock Hist important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organ orifice Original figures Paludicella passes Plumatella Plumatella repens Polype polypide Polyzoon portion present published relations repens resemblance retraction retractor Rösel seen separated sheath side space species specimens statoblasts stomach stones structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young
Información bibliográfica
| Título | A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign Volumen18 de ¬The Ray Society |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
| Exportar cita | BiBTeX EndNote RefMan |