A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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The highly curious modification of the Molluscan type which the Polyzoa present , their singular repetition in this type of the physiognomical features and habits of a totally different one , the great beauty of their forms , and the ...
The highly curious modification of the Molluscan type which the Polyzoa present , their singular repetition in this type of the physiognomical features and habits of a totally different one , the great beauty of their forms , and the ...
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While the present work , in its purely zoographical relations , is entirely confined to those species which inhabit the fresh water , its anatomical details have a much more extended application . The Polyzoa constitute an exceedingly ...
While the present work , in its purely zoographical relations , is entirely confined to those species which inhabit the fresh water , its anatomical details have a much more extended application . The Polyzoa constitute an exceedingly ...
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... which , independently of their peculiar habitat , possess certain characters entitling them to be viewed as a group apart from the marine representatives of the class , that the present work is to be devoted .
... which , independently of their peculiar habitat , possess certain characters entitling them to be viewed as a group apart from the marine representatives of the class , that the present work is to be devoted .
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... of his observations , B. de Jussieu employed the word polype to designate the various productions whose animal nature had thus been so satisfactorily determined , a term which up to the present day has been in general adoption .
... of his observations , B. de Jussieu employed the word polype to designate the various productions whose animal nature had thus been so satisfactorily determined , a term which up to the present day has been in general adoption .
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... which I have employed in the present Memoir . † Notwithstanding , however , the completeness with which the ascidian type of structure had now been recognised in the Polyzoa , naturalists had not yet emancipated themselves from the ...
... which I have employed in the present Memoir . † Notwithstanding , however , the completeness with which the ascidian type of structure had now been recognised in the Polyzoa , naturalists had not yet emancipated themselves from the ...
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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