A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Página 16
... digestive system is perhaps very remote . It may possibly be more correctly viewed as connected with sensation . Its homological import will be afterwards considered . From the mouth an esophagus ( Pl . II , fig . 24 ; V , fig . 5 ; IX ...
... digestive system is perhaps very remote . It may possibly be more correctly viewed as connected with sensation . Its homological import will be afterwards considered . From the mouth an esophagus ( Pl . II , fig . 24 ; V , fig . 5 ; IX ...
Página 17
... alimentary tube in both the phylactolæmatous and gymnolæmatous forms is somewhat complex . It may , however , be ... tract of the alimentary canal , and , on the application of acetic acid , becomes frequently raised from the subjacent ...
... alimentary tube in both the phylactolæmatous and gymnolæmatous forms is somewhat complex . It may , however , be ... tract of the alimentary canal , and , on the application of acetic acid , becomes frequently raised from the subjacent ...
Página 18
... alimentary canal in structure and function ; the well - defined longitudinal rugæ and deep brown colour of the internal layer of the stomach nearly disappear in it , and , during the process of digestion , we may perceive that the ...
... alimentary canal in structure and function ; the well - defined longitudinal rugæ and deep brown colour of the internal layer of the stomach nearly disappear in it , and , during the process of digestion , we may perceive that the ...
Página 23
... alimentary canal ; it thus connects itself with the digestive system . It is , moreover , the only representative in these animals of a sanguiferous circulation , for in the Polyzoa there is certainly no trace of a heart , nor can ...
... alimentary canal ; it thus connects itself with the digestive system . It is , moreover , the only representative in these animals of a sanguiferous circulation , for in the Polyzoa there is certainly no trace of a heart , nor can ...
Página 24
... alimentary canal . I cannot , however , confirm their existence in the latter situation ; indeed , my own observations are entirely opposed to their presence on the alimen- tary canal ; and I cannot help thinking that this statement of ...
... alimentary canal . I cannot , however , confirm their existence in the latter situation ; indeed , my own observations are entirely opposed to their presence on the alimen- tary canal ; and I cannot help thinking that this statement of ...
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