A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 3
... a true vegetation and possessed the essential characters of plants , while their polypes were certain inflorescences or developments of the vegetable axis in which the vitality had become exalted from the vegetable into the animal .
... a true vegetation and possessed the essential characters of plants , while their polypes were certain inflorescences or developments of the vegetable axis in which the vitality had become exalted from the vegetable into the animal .
Página 10
The location of Urnatella among the Gymnolæmatous Polyzoa must for the present be viewed as a provisional expedient , subject to alteration as its structure becomes better known . See the description of the genus farther on .
The location of Urnatella among the Gymnolæmatous Polyzoa must for the present be viewed as a provisional expedient , subject to alteration as its structure becomes better known . See the description of the genus farther on .
Página 11
4 , a ) lines the interior of the cells , and when it arrives at their apertures would protrude beyond the ectocyst were it not that it here becomes invaginated or inverted into itself , and then terminates by being attached round the ...
4 , a ) lines the interior of the cells , and when it arrives at their apertures would protrude beyond the ectocyst were it not that it here becomes invaginated or inverted into itself , and then terminates by being attached round the ...
Página 12
In the midst of this a minute vacuola next shows itself ; this becomes the cell - cavity , and gradually increases in ... down to a spot where the transverse fibres appear to become condensed into a sort of sphincter , and shortly after ...
In the midst of this a minute vacuola next shows itself ; this becomes the cell - cavity , and gradually increases in ... down to a spot where the transverse fibres appear to become condensed into a sort of sphincter , and shortly after ...
Página 14
I have not , however , succeeded in making out in it any distinct structure , but its membranous nature becomes at once manifest when the animal has undergone partial desiccation , for then the ectocyst is thrown into folds by losing a ...
I have not , however , succeeded in making out in it any distinct structure , but its membranous nature becomes at once manifest when the animal has undergone partial desiccation , for then the ectocyst is thrown into folds by losing a ...
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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 |