A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 7
Retractor muscle . Let us imagine an alimentary canal , consisting of esophagus ,
stomach , and intestine , to be furnished at its origin with long ciliated tentacula ,
and to have a single nervous ganglion situated on one side of the wesophagus .
Retractor muscle . Let us imagine an alimentary canal , consisting of esophagus ,
stomach , and intestine , to be furnished at its origin with long ciliated tentacula ,
and to have a single nervous ganglion situated on one side of the wesophagus .
Página 8
surface a secondary investment of very various constitution in the different groups
; and we may , moreover , conceive of the entire animal with its digestive tube ,
tentacula , ganglion , muscles , generative organs , circumambient fluid , and ...
surface a secondary investment of very various constitution in the different groups
; and we may , moreover , conceive of the entire animal with its digestive tube ,
tentacula , ganglion , muscles , generative organs , circumambient fluid , and ...
Página 12
There can be no doubt that these fibres of the endocyst are muscular , and that it
is to their presence that the high degree of contractility enjoyed by the endocyst of
Lophopus is in a great measure , if not entirely , due . When treated with acetic ...
There can be no doubt that these fibres of the endocyst are muscular , and that it
is to their presence that the high degree of contractility enjoyed by the endocyst of
Lophopus is in a great measure , if not entirely , due . When treated with acetic ...
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 ...
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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 canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium 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 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 represented 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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