A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Página 3
... branches grew by a true vegetation and possessed the essential characters of plants , while their polypes were certain inflorescences or developments of the vegetable axis in which the vitality had become exalted from the vegetable into ...
... branches grew by a true vegetation and possessed the essential characters of plants , while their polypes were certain inflorescences or developments of the vegetable axis in which the vitality had become exalted from the vegetable into ...
Página 31
... branch which runs along the root of the lophophore towards the hæmal side , and which sends in its passage a filament to each tentacle on this side of the lophophore , it continues its course ( a ) along the roof of the arms to their ...
... branch which runs along the root of the lophophore towards the hæmal side , and which sends in its passage a filament to each tentacle on this side of the lophophore , it continues its course ( a ) along the roof of the arms to their ...
Página 35
... branches , constitute several concentric series on the surface of an expanded disc . In Paludicella they also arise with much regularity from fixed points a little below and at each side of the orifice of the previously formed cells ...
... branches , constitute several concentric series on the surface of an expanded disc . In Paludicella they also arise with much regularity from fixed points a little below and at each side of the orifice of the previously formed cells ...
Página 48
... branches to the transverse respiratory bars of that tunicate . The longitudinal bars have totally disappeared , and the posterior extremity of the main tube or " branchial sinus " is continued across the alimentary canal on each side ...
... branches to the transverse respiratory bars of that tunicate . The longitudinal bars have totally disappeared , and the posterior extremity of the main tube or " branchial sinus " is continued across the alimentary canal on each side ...
Página 56
... branches , one from each arm of the crescent , which embrace the oesophagus just behind the mouth . Through this vessel the blood flows backwards in a continuous stream . The great afferent and efferent trunks , now described , were ...
... branches , one from each arm of the crescent , which embrace the oesophagus just behind the mouth . Through this vessel the blood flows backwards in a continuous stream . The great afferent and efferent trunks , now described , were ...
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A Monograph of the Fresh-water Polyzoa, Including All the Known Species ... George James Allman Sin vista previa disponible - 1856 |
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