A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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... so that I am enabled to introduce into the present work , a figure representing
some of the more important features in the structure of this remarkable Polyzoon .
All the figures upon the eleven lithographic plates which accompany this volume
...
... so that I am enabled to introduce into the present work , a figure representing
some of the more important features in the structure of this remarkable Polyzoon .
All the figures upon the eleven lithographic plates which accompany this volume
...
Página 14
Neither Trembley nor Baker takes any notice of this gelatinoid envelope . M.
Dumortier mentions it , and represents it in his figure , * while M. Van Beneden
believes it to be an accidental investment acquired by the animal during
confinement .
Neither Trembley nor Baker takes any notice of this gelatinoid envelope . M.
Dumortier mentions it , and represents it in his figure , * while M. Van Beneden
believes it to be an accidental investment acquired by the animal during
confinement .
Página 22
... epistome is also represented . * The perigastric space , and interior of the
tentacula and lophophore , all freely communicate with one another , and are
filled with a clear fluid , in which float numerous particles of very irregular form
and size .
... epistome is also represented . * The perigastric space , and interior of the
tentacula and lophophore , all freely communicate with one another , and are
filled with a clear fluid , in which float numerous particles of very irregular form
and size .
Página 34
Diagrams representing the chorization process in the development of the embryo
of Alcyonella . The stage represented in 3 has not been actually seen , but seems
to be the only one that will supply the missing link . Towards the opening ...
Diagrams representing the chorization process in the development of the embryo
of Alcyonella . The stage represented in 3 has not been actually seen , but seems
to be the only one that will supply the missing link . Towards the opening ...
Página 43
The great respiratory sac of the Tunicata is the most striking feature in the
structure of this group , and I shall therefore first endeavour to point out where the
respiratory sac of the Tunicata is represented in the Polyzoa . Now , the opinions
...
The great respiratory sac of the Tunicata is the most striking feature in the
structure of this group , and I shall therefore first endeavour to point out where the
respiratory sac of the Tunicata is represented in the Polyzoa . Now , the opinions
...
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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 cćnćcium 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