A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28Ray Society, 1856 - 119 páginas |
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Página 22
... fluid , in which float numerous particles of very irre- gular form and size . In this fluid may be observed a constant rotatory motion , rendered apparent by the floating corpuscles as they are whirled away under the influence of the ...
... fluid , in which float numerous particles of very irre- gular form and size . In this fluid may be observed a constant rotatory motion , rendered apparent by the floating corpuscles as they are whirled away under the influence of the ...
Página 23
... fluid ; some facts already recorded ( page 13 ) , would seem to point to the existence of a system of tubes in the substance of the endocyst , which may afford the necessary channels of communication , or it may be that it is in simple ...
... fluid ; some facts already recorded ( page 13 ) , would seem to point to the existence of a system of tubes in the substance of the endocyst , which may afford the necessary channels of communication , or it may be that it is in simple ...
Página 34
... fluid , the posterior part ciliated , the anterior destitute of cilia and partially or entirely pushed back into the posterior by a process of invagination ; while the sac carries within it two young polypides , which are suspended from ...
... fluid , the posterior part ciliated , the anterior destitute of cilia and partially or entirely pushed back into the posterior by a process of invagination ; while the sac carries within it two young polypides , which are suspended from ...
Otras ediciones - Ver todas
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 longitudinal 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