A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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There is scarcely a pond or canal of clear water where some of the species may
not be found ; most of them occur often in great abundance in the waters round
London , and a slight acquaintance with their habits , as described in the present
...
There is scarcely a pond or canal of clear water where some of the species may
not be found ; most of them occur often in great abundance in the waters round
London , and a slight acquaintance with their habits , as described in the present
...
Página 5
... are exceedingly vague and incorrect ; the difference between the Polyzoa and
the true radiate zoophytes never occurred to him , and he imagines the affinity
with the Mollusca to be possessed by the entire group of his polypes à polypiers .
... are exceedingly vague and incorrect ; the difference between the Polyzoa and
the true radiate zoophytes never occurred to him , and he imagines the affinity
with the Mollusca to be possessed by the entire group of his polypes à polypiers .
Página 8
Besides these terms , and some which will be explained as they occur , two
others in common use ought to be here defined . The cells are the little chambers
of which the cænæcium is made up , and in each of which a polypide is lodged .
Besides these terms , and some which will be explained as they occur , two
others in common use ought to be here defined . The cells are the little chambers
of which the cænæcium is made up , and in each of which a polypide is lodged .
Página 14
In Paludicella they acquire their maximum in development and constancy ; they
occur here between every cell , and consist of an annular process , which
projects transversely from the ectocyst into the interior of the cell , with a covering
of ...
In Paludicella they acquire their maximum in development and constancy ; they
occur here between every cell , and consist of an annular process , which
projects transversely from the ectocyst into the interior of the cell , with a covering
of ...
Página 15
I do not , however , lay any stress on the blue colour produced in the above
instance , as it did not occur in others , and was therefore probably accidental .
Upon the whole , the reactions of the pergamentaceous ectocysts of Plumatella ,
& c .
I do not , however , lay any stress on the blue colour produced in the above
instance , as it did not occur in others , and was therefore probably accidental .
Upon the whole , the reactions of the pergamentaceous ectocysts of Plumatella ,
& c .
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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 ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
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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