A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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THE following work contains the result of many years ' careful study of the fresh - water representatives of a group of animals which , in all their relations , are full of interest for the philosophic naturalist .
THE following work contains the result of many years ' careful study of the fresh - water representatives of a group of animals which , in all their relations , are full of interest for the philosophic naturalist .
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... hands of the naturalist a manual which may facilitate further study of a group so full of interest , and among which I doubt not that many new facts still remain to be discovered . To the many friends who , by the communication of ...
... hands of the naturalist a manual which may facilitate further study of a group so full of interest , and among which I doubt not that many new facts still remain to be discovered . To the many friends who , by the communication of ...
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... 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 .
... 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 .
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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 Linnćus , though he ...
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 Linnćus , though he ...
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... and the attention of naturalists was now chiefly directed to the comparison of external characters for the determination of species , and as the grounds of classification . Numerous systems were accordingly from time to time ...
... and the attention of naturalists was now chiefly directed to the comparison of external characters for the determination of species , and as the grounds of classification . Numerous systems were accordingly from time to time ...
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Otras ediciones - Ver todas
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
action adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British 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 Hancock 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 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