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 28
... of the latter to move in the direction of least resist- ance , or through the orifice of the cell : for the mere straightening of the esophagus , to which Dr. A. Farre * attributes so large a share 28 MUSCULAR SYSTEM .
... of the latter to move in the direction of least resist- ance , or through the orifice of the cell : for the mere straightening of the esophagus , to which Dr. A. Farre * attributes so large a share 28 MUSCULAR SYSTEM .
Página 29
... orifice ; at the same time the vaginal sphincter relaxing , affords to the cone of tentacula a free passage through the tube of the inverted endocyst . The succeeding steps in the process take place somewhat differently in the two great ...
... orifice ; at the same time the vaginal sphincter relaxing , affords to the cone of tentacula a free passage through the tube of the inverted endocyst . The succeeding steps in the process take place somewhat differently in the two great ...
Página 32
... orifice , and corresponding exactly in position to an ordinary bud , with the early stage of which it may indeed be readily confounded . This body is the ovary . It is filled with spherical ova in various stages of maturity . The ...
... orifice , and corresponding exactly in position to an ordinary bud , with the early stage of which it may indeed be readily confounded . This body is the ovary . It is filled with spherical ova in various stages of maturity . The ...
Página 35
... orifice of the cell . In Cristatella the gemmæ are produced very regularly from constant points on the sides of the previously existing cells , and the new cells thus produced remaining in apposition with one another , and never becom ...
... orifice of the cell . In Cristatella the gemmæ are produced very regularly from constant points on the sides of the previously existing cells , and the new cells thus produced remaining in apposition with one another , and never becom ...
Página 37
... orifice of the cell , as a 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 ...
... orifice of the cell , as a 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 ...
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