A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 7
Further , let us imagine the digestive tube thus constituted to be suspended in a
fluid contained in a membranous sac with two openings , one for the mouth and
the other for the vent ; the tentacula alone being external to the sac . Let us still ...
Further , let us imagine the digestive tube thus constituted to be suspended in a
fluid contained in a membranous sac with two openings , one for the mouth and
the other for the vent ; the tentacula alone being external to the sac . Let us still ...
Página 8
... moreover , conceive of the entire animal with its digestive tube , tentacula ,
ganglion , muscles , generative organs , circumambient fluid , and investing sacs
, repeating itself by gemmation , and thus producing one or more precisely similar
...
... moreover , conceive of the entire animal with its digestive tube , tentacula ,
ganglion , muscles , generative organs , circumambient fluid , and investing sacs
, repeating itself by gemmation , and thus producing one or more precisely similar
...
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 the sooth of an inch in the longer ...
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 the sooth of an inch in the longer ...
Página 17
It soon contracts into a long narrow tube , which leads to an oval sac ( 9 )
corresponding to the cardiac cavity of the stomach in the other fresh - water
Polyzoa , and to the gizzard in certain marine species . This sac is much more
distinct from ...
It soon contracts into a long narrow tube , which leads to an oval sac ( 9 )
corresponding to the cardiac cavity of the stomach in the other fresh - water
Polyzoa , and to the gizzard in certain marine species . This sac is much more
distinct from ...
Página 18
distinct as we ascend toward the æsophagus , and totally disappear from this
tube and from the rectum . The fundus of the stomach appears to differ from the
rest of the alimentary canal in structure and function ; the well - defined
longitudinal ...
distinct as we ascend toward the æsophagus , and totally disappear from this
tube and from the rectum . The fundus of the stomach appears to differ from the
rest of the alimentary canal in structure and function ; the well - defined
longitudinal ...
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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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