A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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... Hancock ) received in this country but little attention ; and yet , even apart from its scientific interest , few departments of microscopic observation will be found to possess more attractiveness . There is scarcely a pond or canal of ...
... Hancock ) received in this country but little attention ; and yet , even apart from its scientific interest , few departments of microscopic observation will be found to possess more attractiveness . There is scarcely a pond or canal of ...
Página 27
... Hancock✶ enumerates , under the name of superior tube retractors , two small additional fasciculi , which he describes as originating below those just mentioned , and as inserted also below them into the invaginated tube , their ...
... Hancock✶ enumerates , under the name of superior tube retractors , two small additional fasciculi , which he describes as originating below those just mentioned , and as inserted also below them into the invaginated tube , their ...
Página 28
... Hancock as some of the posterior fibres of the anterior parieto - vaginal muscles . The action of the anterior parieto - vaginal muscles assists in the invagination of the tube , and dilates it when completely retracted ; they thus act ...
... Hancock as some of the posterior fibres of the anterior parieto - vaginal muscles . The action of the anterior parieto - vaginal muscles assists in the invagination of the tube , and dilates it when completely retracted ; they thus act ...
Página 53
... Hancock † had maintained the resemblance between the arms of the lophophore in the hippocrepian Polyzoa and the oral arms of the Brachiopoda , a resemblance singularly striking , and pointing to an important homological relation . In ...
... Hancock † had maintained the resemblance between the arms of the lophophore in the hippocrepian Polyzoa and the oral arms of the Brachiopoda , a resemblance singularly striking , and pointing to an important homological relation . In ...
Página 72
... Hancock , already well known by numerous important papers on the anatomy of the Mollusca , but especially by his ... Hancock's description of his Paludicella procumbens , I cannot satisfy myself that the characters on which the species ...
... Hancock , already well known by numerous important papers on the anatomy of the Mollusca , but especially by his ... Hancock's description of his Paludicella procumbens , I cannot satisfy myself that the characters on which the species ...
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