A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 4
In this Memoir the author has described the locomotive embryos of Flustræ ; he also gives an account of the animals of Flustra carbasea and F. foliacea , and shows them to be quite different from ...
In this Memoir the author has described the locomotive embryos of Flustræ ; he also gives an account of the animals of Flustra carbasea and F. foliacea , and shows them to be quite different from ...
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 9
... generalising the Molluscan form under the conception of an ideal archetype , and finding the heart occupying one side , and the great nervous centres placed upon the opposite , he gives to the former region the name of " hæmal ...
... generalising the Molluscan form under the conception of an ideal archetype , and finding the heart occupying one side , and the great nervous centres placed upon the opposite , he gives to the former region the name of " hæmal ...
Página 13
The perfectly transparent wide origin of this line . gives to the orifice of the cell the appearance of having a deep notch on one side . In Fredericella a slightly prominent keel is also apparent , but the notch - like transparent ...
The perfectly transparent wide origin of this line . gives to the orifice of the cell the appearance of having a deep notch on one side . In Fredericella a slightly prominent keel is also apparent , but the notch - like transparent ...
Página 19
... it may not be out of place to give a description of it here . The general appearance of Pedicellina is that of a gymnolæmatous Polyzoon with its nearly spherical cell seated on the extremity of a long peduncle .
... it may not be out of place to give a description of it here . The general appearance of Pedicellina is that of a gymnolæmatous Polyzoon with its nearly spherical cell seated on the extremity of a long peduncle .
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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 |