A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Página 20
... appearance to the organ ; this is particularly evident in Cristatella . The internal layer is a delicate transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting ...
... appearance to the organ ; this is particularly evident in Cristatella . The internal layer is a delicate transparent membrane , in which I could detect no trace of approximated at their extremities , and thus , instead of constituting ...
Página 22
... appearance ; the festooning of the margin is most marked in Fredericella ; in some species of Plumatella it is scarcely perceptible . A high power of the microscope , and carefully adjusted illumination , will enable us to detect in the ...
... appearance ; the festooning of the margin is most marked in Fredericella ; in some species of Plumatella it is scarcely perceptible . A high power of the microscope , and carefully adjusted illumination , will enable us to detect in the ...
Página 25
... appearance in question to its proper cause . Dumortier and Van Beneden , Hist . Nat . des Polypes composés d'eau douce , 2de partie , ' Mém . de l'Acad . Roy . des Sc . et Belles - lettres de Bruxelles , ' Compl . , t . xvi . ( 5 ...
... appearance in question to its proper cause . Dumortier and Van Beneden , Hist . Nat . des Polypes composés d'eau douce , 2de partie , ' Mém . de l'Acad . Roy . des Sc . et Belles - lettres de Bruxelles , ' Compl . , t . xvi . ( 5 ...
Página 26
... appearance of distinct fibrous fascicles , and I have been unable to detect in them the striæ , or see them breaking into the discs , which may be observed in the great retractors of the polypide . ( 8. ) Parietal Muscles . In the ...
... appearance of distinct fibrous fascicles , and I have been unable to detect in them the striæ , or see them breaking into the discs , which may be observed in the great retractors of the polypide . ( 8. ) Parietal Muscles . In the ...
Página 33
... appearance as in Alcyonella , while many had escaped from the testicle , and were observed to be carried along in the currents of the perigastric fluid , or might be seen clustering round the ovary . The testicle is here , as in ...
... appearance as in Alcyonella , while many had escaped from the testicle , and were observed to be carried along in the currents of the perigastric fluid , or might be seen clustering round the ovary . The testicle is here , as in ...
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 Alcyonella Alcyonella fungosa Alcyonella stagnorum alimentary canal Allman anatomy animal annulus Ascidian attached become Beneden Bowerbankia Brachiopoda branches branchial sac Brit Brux campanulata cavity cell cilia crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst Ehrenbergi embryo endocyst epistome exserted external fibres flabellum fluid fresh-water Polyzoa funiculus ganglion genera genus Gervais hæmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnæus longitudinal lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed oesophagus organ orifice Original figures ovary ovum Paludicella parieto-vaginal muscles peculiar Pedicellina perigastric space Plumatella repens Polype à Panache polypide Polyzoon portion posterior present Raspail respiratory retraction retractor retractor muscles Rösel seen septa side species specimens statoblasts stomach structure surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph