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 41
... bodies , we must take care not to attribute a greater share of significance to this resemblance than it really deserves . † The reproductive phenomena of the fresh - water Polyzoa may be thus classed under three distinct heads : Sexual ...
... bodies , we must take care not to attribute a greater share of significance to this resemblance than it really deserves . † The reproductive phenomena of the fresh - water Polyzoa may be thus classed under three distinct heads : Sexual ...
Página 54
... bodies known as avicularia , which occur in the same group of Polyzoa , with corresponding characters in the shells of the typical Brachiopods . He shows that the smaller valve of the Brachiopod is articulated with the larger , just as ...
... bodies known as avicularia , which occur in the same group of Polyzoa , with corresponding characters in the shells of the typical Brachiopods . He shows that the smaller valve of the Brachiopod is articulated with the larger , just as ...
Página 57
... bodies , which were kept in continual motion , and were often propelled from one cell into a neighbouring one ; a fact which at once led him to infer the continuity of the cavities of the different cells . These cor- puscles he ...
... bodies , which were kept in continual motion , and were often propelled from one cell into a neighbouring one ; a fact which at once led him to infer the continuity of the cavities of the different cells . These cor- puscles he ...
Página 58
... bodies on the under surface of the floating fronds of Lemna , he believes them to be the seeds of thisplant , and supposes what he had seen in the interior of the tube to be some of these seeds which the Polyzoon had swallowed . This ...
... bodies on the under surface of the floating fronds of Lemna , he believes them to be the seeds of thisplant , and supposes what he had seen in the interior of the tube to be some of these seeds which the Polyzoon had swallowed . This ...
Página 59
... bodies , about the size of the head of a pin , and of a yellowish colour , which , in the month of May , 1754 , he found in the water of a neighbouring pond , and which , on being allowed to rest , emitted from various parts of their ...
... bodies , about the size of the head of a pin , and of a yellowish colour , which , in the month of May , 1754 , he found in the water of a neighbouring pond , and which , on being allowed to rest , emitted from various parts of their ...
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