A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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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 13
In specimens of this Polyzoon which had been kept for a few days , and occasionally in some just captured , multitudes of minute oval brilliant corpuscles were seen to have been developed in the endocyst throughout its whole extent .
In specimens of this Polyzoon which had been kept for a few days , and occasionally in some just captured , multitudes of minute oval brilliant corpuscles were seen to have been developed in the endocyst throughout its whole extent .
Página 15
Upon the whole , the reactions of the pergamentaceous ectocysts of Plumatella , & c . , are rather in favour of this tissue being composed of chitine . It is quite insoluble in strong acetic acid , and in a concentrated solution of ...
Upon the whole , the reactions of the pergamentaceous ectocysts of Plumatella , & c . , are rather in favour of this tissue being composed of chitine . It is quite insoluble in strong acetic acid , and in a concentrated solution of ...
Página 17
7 , μ ) ; it possesses also an undoubted cellular structure ; it admits of being traced uninterruptedly over the whole tract of the alimentary canal , and , on the application of acetic acid , becomes frequently raised from the ...
7 , μ ) ; it possesses also an undoubted cellular structure ; it admits of being traced uninterruptedly over the whole tract of the alimentary canal , and , on the application of acetic acid , becomes frequently raised from the ...
Página 18
The whole course of the alimentary matter , from the moment of its prehension to its final ejection , may be easily witnessed in many of the fresh - water Polyzoa . If a polypide of Plumatella repens be watched while in an exserted ...
The whole course of the alimentary matter , from the moment of its prehension to its final ejection , may be easily witnessed in many of the fresh - water Polyzoa . If a polypide of Plumatella repens be watched while in an exserted ...
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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 |