A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Página 30
... transverse striæ , a condition , however , which is not at all times equally perceptible ; and some of our best observers have denied to the Polyzoa the existence of striated fibre . I have , however , by repeated observations ...
... transverse striæ , a condition , however , which is not at all times equally perceptible ; and some of our best observers have denied to the Polyzoa the existence of striated fibre . I have , however , by repeated observations ...
Página 34
... transverse bands ; these bands check the entire evagination of the membrane , but after a time they disappear , and then the unlining and evagination are perfect . In the interior of the protrusible portion , and before the ...
... transverse bands ; these bands check the entire evagination of the membrane , but after a time they disappear , and then the unlining and evagination are perfect . In the interior of the protrusible portion , and before the ...
Página 43
... transversely , or from the neural to the hæmal side , and thus crossing each other at right angles , while the membranous wall of the sac , in every one of the " * On the Homology of the Organs of the Tunicata and the Polyzoa ...
... transversely , or from the neural to the hæmal side , and thus crossing each other at right angles , while the membranous wall of the sac , in every one of the " * On the Homology of the Organs of the Tunicata and the Polyzoa ...
Página 44
... transverse bars open into two great longitudinal canals , the " branchial " and " thoracic sinuses " of Milne - Edwards , one placed upon the neural , and the other upon the hæmal side of the sac , that they constitute , in fact , a ...
... transverse bars open into two great longitudinal canals , the " branchial " and " thoracic sinuses " of Milne - Edwards , one placed upon the neural , and the other upon the hæmal side of the sac , that they constitute , in fact , a ...
Página 45
... transverse bars which pass off at either side from this sinus , and are richly ciliated , will correspond to the ciliated tentacula of the Polyzoon ; the delicate membrane which constitutes the proper walls of the respiratory sac , to ...
... transverse bars which pass off at either side from this sinus , and are richly ciliated , will correspond to the ciliated tentacula of the Polyzoon ; the delicate membrane which constitutes the proper walls of the respiratory sac , 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