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 40
... important question at once suggests itself , what is the true import of these bodies ? All that we have seen of them is manifestly in accordance with the nature of a bud . The invariable absence of germinal vesicle and germinal spot ...
... important question at once suggests itself , what is the true import of these bodies ? All that we have seen of them is manifestly in accordance with the nature of a bud . The invariable absence of germinal vesicle and germinal spot ...
Página 43
... important step was finally taken by M. Milne- Edwards in distinguishing two primary series in the mollusca ... importance to know in what these affinities really consist ; in other words , to determine the homologous organs in the two ...
... important step was finally taken by M. Milne- Edwards in distinguishing two primary series in the mollusca ... importance to know in what these affinities really consist ; in other words , to determine the homologous organs in the two ...
Página 44
... . Languettes t . Tentacula at + Van Beneden sur les Ascidies simples . Mém . de l'Acad . Roy . de Belgique , ' tome xx , 1847 . Trans . Roy . Irish Acad . , Jan. 1852 . and this is a very important distinction , which from 44 HOMOLOGIES .
... . Languettes t . Tentacula at + Van Beneden sur les Ascidies simples . Mém . de l'Acad . Roy . de Belgique , ' tome xx , 1847 . Trans . Roy . Irish Acad . , Jan. 1852 . and this is a very important distinction , which from 44 HOMOLOGIES .
Página 45
... important distinction , which from not having been recognised , rendered previous attempts at comparison between the respiratory sac of the Ascidian and the tentacular crown of the Polyzoon indefensible . Without a knowledge of the ...
... important distinction , which from not having been recognised , rendered previous attempts at comparison between the respiratory sac of the Ascidian and the tentacular crown of the Polyzoon indefensible . Without a knowledge of the ...
Página 47
... importance of the transverse over the longitudinal bars of the branchial apparatus in the Tunicata is sufficiently ... important fact not easily reconcilable with the view that the branchial sac of an Ascidian is nothing more than a ...
... importance of the transverse over the longitudinal bars of the branchial apparatus in the Tunicata is sufficiently ... important fact not easily reconcilable with the view that the branchial sac of an Ascidian is nothing more than a ...
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