A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 11
The cœnocium , in every case , except in Cristatella , is composed of two distinct membranes , which must be carefully ... which is particularly well adapted for observing the intimate structure of this membrane , we find it composed of ...
The cœnocium , in every case , except in Cristatella , is composed of two distinct membranes , which must be carefully ... which is particularly well adapted for observing the intimate structure of this membrane , we find it composed of ...
Página 13
They were not scattered at random through this membrane , but were contained in the interior of a system of tubes which formed a network in the substance of the endocyst ( Pl . II , fig . 13 ) . They are about theth of an inch in the ...
They were not scattered at random through this membrane , but were contained in the interior of a system of tubes which formed a network in the substance of the endocyst ( Pl . II , fig . 13 ) . They are about theth of an inch in the ...
Página 14
... it to be an accidental investment acquired by the animal during confinement . † The ectocyst in Paludicella is formed of a smooth pergamentaceous semi - transparent membrane , free from earthy deposit , and of a deep brown colour .
... it to be an accidental investment acquired by the animal during confinement . † The ectocyst in Paludicella is formed of a smooth pergamentaceous semi - transparent membrane , free from earthy deposit , and of a deep brown colour .
Página 17
The third or most external layer is a thin membrane ( Pl . III , fig . 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 ...
The third or most external layer is a thin membrane ( Pl . III , fig . 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 ...
Página 20
The internal layer is a delicate transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting an open crescent , they form a ring enclosing a space which embraces ...
The internal layer is a delicate transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting an open crescent , they form a ring enclosing a space which embraces ...
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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 |