A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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There is scarcely a pond or canal of clear water where some of the species may not be found ; most of them occur often in great abundance in the waters round London , and a slight acquaintance with their habits , as described in the ...
There is scarcely a pond or canal of clear water where some of the species may not be found ; most of them occur often in great abundance in the waters round London , and a slight acquaintance with their habits , as described in the ...
Página 5
... vague and incorrect ; the difference between the Polyzoa and the true radiate zoophytes never occurred to him , and he imagines the affinity with the Mollusca to be possessed by the entire group of his polypes à polypiers .
... vague and incorrect ; the difference between the Polyzoa and the true radiate zoophytes never occurred to him , and he imagines the affinity with the Mollusca to be possessed by the entire group of his polypes à polypiers .
Página 8
Besides these terms , and some which will be explained as they occur , two others in common use ought to be here defined . The cells are the little chambers of which the cœnocium is made up , and in each of which a polypide is lodged .
Besides these terms , and some which will be explained as they occur , two others in common use ought to be here defined . The cells are the little chambers of which the cœnocium is made up , and in each of which a polypide is lodged .
Página 14
In Paludicella they acquire their maximum in development and constancy ; they occur here between every cell , and consist of an annular process , which projects transversely from the ectocyst into the interior of the cell , with a ...
In Paludicella they acquire their maximum in development and constancy ; they occur here between every cell , and consist of an annular process , which projects transversely from the ectocyst into the interior of the cell , with a ...
Página 15
I do not , however , lay any stress on the blue colour produced in the above instance , as it did not occur in others , and was therefore probably accidental . Upon the whole , the reactions of the pergamentaceous ectocysts of ...
I do not , however , lay any stress on the blue colour produced in the above instance , as it did not occur in others , and was therefore probably accidental . Upon the whole , the reactions of the pergamentaceous ectocysts of ...
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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 |