A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 12
For reasons to be presently mentioned , it is highly probable that the endocyst is
pervaded by a system of canals of extreme delicacy , which constitute an
irregular network in its substance . Besides the structure now described , peculiar
fibres ...
For reasons to be presently mentioned , it is highly probable that the endocyst is
pervaded by a system of canals of extreme delicacy , which constitute an
irregular network in its substance . Besides the structure now described , peculiar
fibres ...
Página 16
... when the polypide is exserted from its cell , to be in a constant motion , which
consists in an alternate elevation and depression of the organ . The elevation is
effected by distinct muscular fibres ( n ) , which are visible through the transparent
...
... when the polypide is exserted from its cell , to be in a constant motion , which
consists in an alternate elevation and depression of the organ . The elevation is
effected by distinct muscular fibres ( n ) , which are visible through the transparent
...
Página 17
Delicate circular striæ 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 striæ 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 20
Fig 4. Front view of lophophore and contiguous parts . Ectocyst . 6. Endocyst . c .
Invaginated portion of endocyst adherent to the bases of the tentacula and
entering into the formation of the cup . d . Muscular fibres surrounding the margin
of the ...
Fig 4. Front view of lophophore and contiguous parts . Ectocyst . 6. Endocyst . c .
Invaginated portion of endocyst adherent to the bases of the tentacula and
entering into the formation of the cup . d . Muscular fibres surrounding the margin
of the ...
Página 21
... which is nothing more than a peculiar development of these muscles in the
invaginated endocyst . The retractor fibres are obviously homologous with the
great retractor muscles of the others . The mouth , which occupies its normal
position ...
... which is nothing more than a peculiar development of these muscles in the
invaginated endocyst . The retractor fibres are obviously homologous with the
great retractor muscles of the others . The mouth , which occupies its normal
position ...
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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 cænæcium canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella crown 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 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 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 | Biblioteca Nacional de Austria |
| Digitalizado | 12 Mayo 2011 |
| Largo | 119 páginas |
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