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 3
Still , however , assent was far from universal , and the greater number of
naturalists continued to believe in the vegetability of corals , and denounced the
new opinions as false and absurd . Even the celebrated Linnæus , though he
admitted ...
Still , however , assent was far from universal , and the greater number of
naturalists continued to believe in the vegetability of corals , and denounced the
new opinions as false and absurd . Even the celebrated Linnæus , though he
admitted ...
Página 75
It is by no means improbable that they also exist in warmer latitudes , and we
cannot but be surprised that they should have escaped the explorations of the
numerous naturalists who have examined the regions lying further towards the
tropics ...
It is by no means improbable that they also exist in warmer latitudes , and we
cannot but be surprised that they should have escaped the explorations of the
numerous naturalists who have examined the regions lying further towards the
tropics ...
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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 character cilia closely complete condition connected consists constitutes contained continuous 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 Hist 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