A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 1
... polypes , were at last , by the nearly simultaneous investigations of several
naturalists , separated as a distinct group , and described by Thompson under
the name of Polyzoa , and shortly after indicated by Ehrenberg under that of
Bryozoa .
... polypes , were at last , by the nearly simultaneous investigations of several
naturalists , separated as a distinct group , and described by Thompson under
the name of Polyzoa , and shortly after indicated by Ehrenberg under that of
Bryozoa .
Página 100
The tubes remain always separated and even considerably elongated from one
another . The parent branches lie prostrate upon the surface of the leaves to
which they are attached , but new buds often rise from them at a right angle .
The tubes remain always separated and even considerably elongated from one
another . The parent branches lie prostrate upon the surface of the leaves to
which they are attached , but new buds often rise from them at a right angle .
Página 113
... having discovered near Paris an animal which agreed with Ehrenberg's
description , saw the necessity of separating it ... and its strikingly articulated
cænæcium , formed of regular claviform cells , all separated from one another by
complete ...
... having discovered near Paris an animal which agreed with Ehrenberg's
description , saw the necessity of separating it ... and its strikingly articulated
cænæcium , formed of regular claviform cells , all separated from one another by
complete ...
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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 alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British canal cavity cell characters 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 stones structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young