A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Página 12
... minute vacuola next shows itself ; this becomes the cell - cavity , and gradually increases in size with the enlarging cell ; the nucleus is persistent , remaining attached to the cell - wall . For reasons to be presently mentioned , it ...
... minute vacuola next shows itself ; this becomes the cell - cavity , and gradually increases in size with the enlarging cell ; the nucleus is persistent , remaining attached to the cell - wall . For reasons to be presently mentioned , it ...
Página 13
... minute oval brilliant corpuscles were seen to have been developed in the endocyst throughout its whole extent . They were not scattered at random through this membrane , but were contained in the interior of a system of tubes which ...
... minute oval brilliant corpuscles were seen to have been developed in the endocyst throughout its whole extent . They were not scattered at random through this membrane , but were contained in the interior of a system of tubes which ...
Página 18
... minute organic bodies may be observed to be whirled along in the vortices caused by the action of the tentacular cilia , and conveyed to the mouth , where many of them are at once seized and swallowed , and others rejected . The food ...
... minute organic bodies may be observed to be whirled along in the vortices caused by the action of the tentacular cilia , and conveyed to the mouth , where many of them are at once seized and swallowed , and others rejected . The food ...
Página 21
... minute cavity , which looks as if it were cut off from the rest of the tube , may be very plainly seen in the extremity of each . tentacle ; this condition would also seem to exist in other genera , but it is nowhere so well marked as ...
... minute cavity , which looks as if it were cut off from the rest of the tube , may be very plainly seen in the extremity of each . tentacle ; this condition would also seem to exist in other genera , but it is nowhere so well marked as ...
Página 22
... minute tubular cavity clothed with actively vibrating cilia . I was unable to follow this organ through its whole extent , or determine its exact relations , as it appeared to lose itself beneath the opacity of the surrounding ...
... minute tubular cavity clothed with actively vibrating cilia . I was unable to follow this organ through its whole extent , or determine its exact relations , as it appeared to lose itself beneath the opacity of the surrounding ...
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