A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 16-20 de 39
Página 33
... external surface of the stomach , near the commencement of the intestine , and by the other attached to the walls of ... externally . When liberated from the outer membrane of the ovum , which still confines it , it swims actively ...
... external surface of the stomach , near the commencement of the intestine , and by the other attached to the walls of ... externally . When liberated from the outer membrane of the ovum , which still confines it , it swims actively ...
Página 34
... external membrane of the ovum , which , however , has become much distended , in accordance with the increasing size of the included parts , and at length , giving way , allows the embryo to escape . The free embryo ( Pl . XI , figs ...
... external membrane of the ovum , which , however , has become much distended , in accordance with the increasing size of the included parts , and at length , giving way , allows the embryo to escape . The free embryo ( Pl . XI , figs ...
Página 35
... external walls of the cell , and filled with a granular parenchyma ( Pl . XI , fig . 1 ) . It now becomes elongated ( fig . 2 ) , and we soon find it noïlowed out into a cavity , which communicates with the interior of the parent- cell ...
... external walls of the cell , and filled with a granular parenchyma ( Pl . XI , fig . 1 ) . It now becomes elongated ( fig . 2 ) , and we soon find it noïlowed out into a cavity , which communicates with the interior of the parent- cell ...
Página 36
... external water , and its nutrition must have been effected through the general nutrition of the colony ; now , however , an opening occurs in the new cell just over the tenta- cular crown of the polypide , and the last stage of ...
... external water , and its nutrition must have been effected through the general nutrition of the colony ; now , however , an opening occurs in the new cell just over the tenta- cular crown of the polypide , and the last stage of ...
Página 38
... external walls in most cases slightly project beyond the surface of the disc , and thus give to the latter an elegantly mammillated condition . In some cases , however , the cellular condition of one or both discs is very obscure . The ...
... external walls in most cases slightly project beyond the surface of the disc , and thus give to the latter an elegantly mammillated condition . In some cases , however , the cellular condition of one or both discs is very obscure . The ...
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