A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 7
To give , however , more actuality to our ideal Polyzoon , we may bear in mind that the immediately investing sac has the power , in almost every case , of secreting from its external surface a secondary investment of very various ...
To give , however , more actuality to our ideal Polyzoon , we may bear in mind that the immediately investing sac has the power , in almost every case , of secreting from its external surface a secondary investment of very various ...
Página 8
surface a secondary investment of very various constitution in the different groups ; and we may , moreover , conceive of the entire animal with its digestive tube , tentacula , ganglion , muscles , generative organs , circumambient ...
surface a secondary investment of very various constitution in the different groups ; and we may , moreover , conceive of the entire animal with its digestive tube , tentacula , ganglion , muscles , generative organs , circumambient ...
Página 12
These are situated on its inner surface , where they constitute a well - marked 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 ...
These are situated on its inner surface , where they constitute a well - marked 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 ...
Página 14
The structure of this body is remarkable ; it consists of a central mass , surrounded by a distinct layer of somewhat elongated cellules placed perpendicularly to its surface . The body which thus closes up the centre of the annular ...
The structure of this body is remarkable ; it consists of a central mass , surrounded by a distinct layer of somewhat elongated cellules placed perpendicularly to its surface . The body which thus closes up the centre of the annular ...
Página 16
The cavity in its interior communicates through an opening ( e ) in the lophophore with the perigastric space ; the walls which are turned towards the mouth are thick , and densely clothed on their external surface with vibratile cilia ...
The cavity in its interior communicates through an opening ( e ) in the lophophore with the perigastric space ; the walls which are turned towards the mouth are thick , and densely clothed on their external surface with vibratile 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 |