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 37
... minute spherical tubercle ( Pl . XI , fig . 10 ) , projecting from the inner surface of the endocyst into the perigastric space . It is evidently composed of a mass of minute cells with a more condensed peripheral layer . It now ...
... minute spherical tubercle ( Pl . XI , fig . 10 ) , projecting from the inner surface of the endocyst into the perigastric space . It is evidently composed of a mass of minute cells with a more condensed peripheral layer . It now ...
Página 38
... minute cells , surrounded by a denser layer , which is continuous with the surface of the funiculus . The swelling now increases in size , and assumes a more regularly oval form , while its contents appear more uniformly granular , and ...
... minute cells , surrounded by a denser layer , which is continuous with the surface of the funiculus . The swelling now increases in size , and assumes a more regularly oval form , while its contents appear more uniformly granular , and ...
Página 39
... minute , strongly refracting corpuscles ( fig . 41 , 41 , 41 ' ) ; but any further observation of the progressive develop- ment of the contents , up to the period of the opening of the statoblast and the final escape of a young polyzoon ...
... minute , strongly refracting corpuscles ( fig . 41 , 41 , 41 ' ) ; but any further observation of the progressive develop- ment of the contents , up to the period of the opening of the statoblast and the final escape of a young polyzoon ...
Página 46
... crescentric depression of the distal extremity of the branchial sinus to resemble , even in minute details , the tentacular crown of Plumatella . Now nearly all the changes which we have thus hypothetically 46 HOMOLOGIES .
... crescentric depression of the distal extremity of the branchial sinus to resemble , even in minute details , the tentacular crown of Plumatella . Now nearly all the changes which we have thus hypothetically 46 HOMOLOGIES .
Página 51
... minute apertures - and the result would be an Ascidian . " ‡ Now , if the above be an exact statement of the true morphology of the Ascidian , it is inconsistent with the views attempted to be demonstrated in the present paper . After a ...
... minute apertures - and the result would be an Ascidian . " ‡ Now , if the above be an exact statement of the true morphology of the Ascidian , it is inconsistent with the views attempted to be demonstrated in the present paper . After 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