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 41
Página 7
... tube thus constituted to be suspended in a fluid con- tained in a membranous sac with two openings , one for the mouth and the other for the vent ; the tentacula alone being external to the sac . Let us still further suppose the ...
... tube thus constituted to be suspended in a fluid con- tained in a membranous sac with two openings , one for the mouth and the other for the vent ; the tentacula alone being external to the sac . Let us still further suppose the ...
Página 8
... tube , tentacula , ganglion , muscles , generative organs , circumambient fluid , and investing sacs , repeating itself by gemmation , and thus producing one or more precisely similar systems holding a definite position relatively to ...
... tube , tentacula , ganglion , muscles , generative organs , circumambient fluid , and investing sacs , repeating itself by gemmation , and thus producing one or more precisely similar systems holding a definite position relatively to ...
Página 13
... tubes already existing for their reception . It would follow from this that the presence of a reticulated system of tubes in the substance of the endocyst is the normal condition of this tunic , but from the delicacy of these tubes ...
... tubes already existing for their reception . It would follow from this that the presence of a reticulated system of tubes in the substance of the endocyst is the normal condition of this tunic , but from the delicacy of these tubes ...
Página 17
... tube presents , just after its origin , a wide dilation , and then suddenly con- tracting , continues as a narrow cylindrical canal to its termination just below the mouth . The histological structure of the alimentary tube in both the ...
... tube presents , just after its origin , a wide dilation , and then suddenly con- tracting , continues as a narrow cylindrical canal to its termination just below the mouth . The histological structure of the alimentary tube in both the ...
Página 18
... tube and from the rectum . The fundus of the stomach appears to differ from the rest of the alimentary canal in structure and function ; the well - defined longitudinal rugæ and deep brown colour of the internal layer of the stomach ...
... tube and from the rectum . The fundus of the stomach appears to differ from the rest of the alimentary canal in structure and function ; the well - defined longitudinal rugæ and deep brown colour of the internal layer of the stomach ...
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