A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 13
In some species of Plumatella , and in Alcyonella flabellum and A. Benedeni , the
earthy particles are entirely absent , from a longitudinal line which commences
wide near the aperture of the cell , and gradually narrows as it passes backwards
...
In some species of Plumatella , and in Alcyonella flabellum and A. Benedeni , the
earthy particles are entirely absent , from a longitudinal line which commences
wide near the aperture of the cell , and gradually narrows as it passes backwards
...
Página 14
In several species of Plumatella , especially P. coralloides ( Pl . VII , figs . 2 , 3 ) ,
septa exist , but these generally occur only at intervals , leaving several cells
between them , which communicate freely with one another : not unfrequently the
...
In several species of Plumatella , especially P. coralloides ( Pl . VII , figs . 2 , 3 ) ,
septa exist , but these generally occur only at intervals , leaving several cells
between them , which communicate freely with one another : not unfrequently the
...
Página 15
I observed , however , that in one instance the ectocyst of Plumatella repens ,
after lying for several weeks in a concentrated solution of caustic potash , in
which it had been first boiled , presented under the microscope , at one or two
points , a ...
I observed , however , that in one instance the ectocyst of Plumatella repens ,
after lying for several weeks in a concentrated solution of caustic potash , in
which it had been first boiled , presented under the microscope , at one or two
points , a ...
Página 17
Delicate circular strić may generally be distinctly observed in it , they may be
seen surrounding the stomach , and are probably muscular fibres ; they are
particularly evident in Alcyonella and Plumatella towards the fundus of the
stomach ...
Delicate circular strić may generally be distinctly observed in it , they may be
seen surrounding the stomach , and are probably muscular fibres ; they are
particularly evident in Alcyonella and Plumatella towards the fundus of the
stomach ...
Página 18
If a polypide of Plumatella repens be watched while in an exserted state ,
different kinds of Infusoria and other minute organic bodies may be observed to
be whirled along in the vortices caused by the action of the tentacular cilia , and ...
If a polypide of Plumatella repens be watched while in an exserted state ,
different kinds of Infusoria and other minute organic bodies may be observed to
be whirled along in the vortices caused by the action of the tentacular cilia , and ...
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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
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cćnćcium canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous 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 Hist important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organs 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, Tema 28 A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, George James Allman Volumen13 de DE-601)130488305: Ray Society Publications, Ray Society Ray Society, Ray Society Volumen28 de Ray society ... [Publications |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
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