A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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While the Fresh - water Polyzoa have been carefully studied on the Continent , especially by Van Beneden , and Dumortier , they have hitherto ( if we except an excellent paper by Mr. Albany Hancock ) received in this country but little ...
While the Fresh - water Polyzoa have been carefully studied on the Continent , especially by Van Beneden , and Dumortier , they have hitherto ( if we except an excellent paper by Mr. Albany Hancock ) received in this country but little ...
Página 5
Residing in a remote part of Ireland , and in a great measure cut off from intercourse * Dumortier and Van Beneden ( ' Hist . Nat . des Pol . comp . d'eau douce ' ) assign to Lamouroux the merit of having been the first to detect the ...
Residing in a remote part of Ireland , and in a great measure cut off from intercourse * Dumortier and Van Beneden ( ' Hist . Nat . des Pol . comp . d'eau douce ' ) assign to Lamouroux the merit of having been the first to detect the ...
Página 14
M. Dumortier mentions it , and represents it in his figure , * while M. Van Beneden believes it to be an accidental investment acquired by the animal during confinement . + The ectocyst in Paludicella is formed of a smooth ...
M. Dumortier mentions it , and represents it in his figure , * while M. Van Beneden believes it to be an accidental investment acquired by the animal during confinement . + The ectocyst in Paludicella is formed of a smooth ...
Página 23
I have , however , fully convinced myself that no such aperture exists , and the phenomenon described by Meyen must certainly be due to an accidental rupture of the tissues , though Van Beneden describes the passage of the eggs through ...
I have , however , fully convinced myself that no such aperture exists , and the phenomenon described by Meyen must certainly be due to an accidental rupture of the tissues , though Van Beneden describes the passage of the eggs through ...
Página 24
Van Beneden * tells us that he has seen these cilia , not only on the walls of the perigastric space , but on the external surface of the alimentary canal . I cannot , however , confirm their existence in the latter situation ; indeed ...
Van Beneden * tells us that he has seen these cilia , not only on the walls of the perigastric space , but on the external surface of the alimentary canal . I cannot , however , confirm their existence in the latter situation ; indeed ...
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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
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cćnćcium canal 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 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 structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young