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 35
... Alcyonella fungosa be cut into small pieces , under water , in the month of July or August , the ciliated embryos will be liberated in abundance , and may be examined . with facility . Gemmation . The development of gemmæ has already ...
... Alcyonella fungosa be cut into small pieces , under water , in the month of July or August , the ciliated embryos will be liberated in abundance , and may be examined . with facility . Gemmation . The development of gemmæ has already ...
Página 39
... Alcyonella fungosa the escape of an egg through an opening in the vicinity of the anus ; but , notwithstanding a similar observation already noticed as made by Van Beneden on the marine Laguncula repens , this I feel certain has been ...
... Alcyonella fungosa the escape of an egg through an opening in the vicinity of the anus ; but , notwithstanding a similar observation already noticed as made by Van Beneden on the marine Laguncula repens , this I feel certain has been ...
Página 40
... Alcyonella Benedeni , I have observed , besides the ordinary statoblasts , another kind which is characterised by some peculiarities . In both these Polyzoa the cells may be observed towards the end of summer loaded with statoblasts ...
... Alcyonella Benedeni , I have observed , besides the ordinary statoblasts , another kind which is characterised by some peculiarities . In both these Polyzoa the cells may be observed towards the end of summer loaded with statoblasts ...
Página 42
... Alcyonella it occupies exactly the position in certain cells that the buds destined to become polypides do in others , and that at an early stage of polypide and ovary it is scarcely possible to distinguish one from the other ; so that ...
... Alcyonella it occupies exactly the position in certain cells that the buds destined to become polypides do in others , and that at an early stage of polypide and ovary it is scarcely possible to distinguish one from the other ; so that ...
Página 58
... Alcyonella . In Baker's Employment for the Microscope , ' published in 1753 , † we have , under the name of " The Bellflower Animal , " the description of a Polyzoon which would seem to be identical with the " Polype à Panache . " Baker ...
... Alcyonella . In Baker's Employment for the Microscope , ' published in 1753 , † we have , under the name of " The Bellflower Animal , " the description of a Polyzoon which would seem to be identical with the " Polype à Panache . " Baker ...
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