A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 4
... plant - like form was at such variance with every previously conceived notion of
animal existence . It was not yet suspected that among these curious “ zoophytes
, " so like one another in external form , there were still two totally distinct types ...
... plant - like form was at such variance with every previously conceived notion of
animal existence . It was not yet suspected that among these curious “ zoophytes
, " so like one another in external form , there were still two totally distinct types ...
Página 5
He also perceived their close relation to the compound Ascidiæ , and was the first
to designate them by a distinct name which no longer assumed their connection
with the polypes . The name thus proposed by Thompson for the group whose ...
He also perceived their close relation to the compound Ascidiæ , and was the first
to designate them by a distinct name which no longer assumed their connection
with the polypes . The name thus proposed by Thompson for the group whose ...
Página 6
... of the Polyzoa . In the history of progressive discovery which has thus been
sketched , eight distinct epochs must be noted , each characterised by some one
step which has more or less directly led to the views at present entertained of ...
... of the Polyzoa . In the history of progressive discovery which has thus been
sketched , eight distinct epochs must be noted , each characterised by some one
step which has more or less directly led to the views at present entertained of ...
Página 8
The recognition , however , of a type of structure in the Polyzoa totally distinct
from that of the Polypes proper , necessitates a change in the terminology
employed in their description . On these grounds I have ventured to substitute
some new ...
The recognition , however , of a type of structure in the Polyzoa totally distinct
from that of the Polypes proper , necessitates a change in the terminology
employed in their description . On these grounds I have ventured to substitute
some new ...
Página 11
The cænæcium , in every case , except in Cristatella , is composed of two distinct
membranes , which must be carefully distinguished from one another — an
internal , the endocyst , which is always soft , transparent , and contractile ; and
an ...
The cænæcium , in every case , except in Cristatella , is composed of two distinct
membranes , which must be carefully distinguished from one another — an
internal , the endocyst , which is always soft , transparent , and contractile ; and
an ...
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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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