A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 1-5 de 75
Página 13
... Plumatella , and in Alcyonella flabellum and A. Benedeni , the earthy particles are entirely absent , from a longitudinal line which commences wide near the aperture of the cell , and gradually narrows as it passes backwards , when it ...
... Plumatella , and in Alcyonella flabellum and A. Benedeni , the earthy particles are entirely absent , from a longitudinal line which commences wide near the aperture of the cell , and gradually narrows as it passes backwards , when it ...
Página 14
... Plumatella , especially P. coralloides ( Pl . VII , figs . 2 , 3 ) , septa exist , but these generally occur only at intervals , leaving several cells between them , which communicate freely with one another : not unfrequently the ...
... Plumatella , especially P. coralloides ( Pl . VII , figs . 2 , 3 ) , septa exist , but these generally occur only at intervals , leaving several cells between them , which communicate freely with one another : not unfrequently the ...
Página 15
... Plumatella repens , after lying for several weeks in a concentrated solution of caustic potash , in which it had been first boiled , presented under the microscope , at one or two points , a distinctly blue tint on being wetted with ...
... Plumatella repens , after lying for several weeks in a concentrated solution of caustic potash , in which it had been first boiled , presented under the microscope , at one or two points , a distinctly blue tint on being wetted with ...
Página 17
... Alcyonella and Plumatella towards the fundus of the stomach ; they become less distinct as we ascend toward the œsophagus , and totally 3 DIGESTIVE SYSTEM . 17 being dilated or contracted, or even completely closed. ...
... Alcyonella and Plumatella towards the fundus of the stomach ; they become less distinct as we ascend toward the œsophagus , and totally 3 DIGESTIVE SYSTEM . 17 being dilated or contracted, or even completely closed. ...
Página 18
... Plumatella repens be watched while in an exserted state , different kinds of Infusoria and other minute organic bodies may be observed to be whirled along in the vortices caused by the action of the tentacular cilia , and conveyed to ...
... Plumatella repens be watched while in an exserted state , different kinds of Infusoria and other minute organic bodies may be observed to be whirled along in the vortices caused by the action of the tentacular cilia , and conveyed to ...
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 cœnocium crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst 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 lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed œsophagus 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 Zoophytes