A Monograph of the Fresh-water Polyzoa, Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 1-5 de 28
Página 5
... cavity in Gorgonia , Isis , Alcyonium , & c . , to the tunics of an Ascidian or the mantle of an ordinary Mollusc , a comparison which plainly shows that he had no idea whatever of the relation in question . + Zoological Researches and ...
... cavity in Gorgonia , Isis , Alcyonium , & c . , to the tunics of an Ascidian or the mantle of an ordinary Mollusc , a comparison which plainly shows that he had no idea whatever of the relation in question . + Zoological Researches and ...
Página 11
... cavity is either shut off from those of the neighbouring chambers , or freely communicates with them . In every instance * the polypide can be protruded from its cell , and again withdrawn into it , and the part through which it thus ...
... cavity is either shut off from those of the neighbouring chambers , or freely communicates with them . In every instance * the polypide can be protruded from its cell , and again withdrawn into it , and the part through which it thus ...
Página 12
... cavity , and gradually increases in size with the enlarging cell ; the nucleus is persistent , remaining attached to the cell - wall . For reasons to be presently mentioned , it is highly probable that the endocyst is pervaded by a ...
... cavity , and gradually increases in size with the enlarging cell ; the nucleus is persistent , remaining attached to the cell - wall . For reasons to be presently mentioned , it is highly probable that the endocyst is pervaded by a ...
Página 13
... cavity ( fig . 14 ) , which under the action of acetic acid dilates and fills nearly the entire corpuscle ( fig . 15 ) . The situation of these bodies in a tubular network in the substance of the endocyst is a fact of great interest ...
... cavity ( fig . 14 ) , which under the action of acetic acid dilates and fills nearly the entire corpuscle ( fig . 15 ) . The situation of these bodies in a tubular network in the substance of the endocyst is a fact of great interest ...
Página 14
... cavity of the cell at each side . The structure of this body is remark- able ; it consists of a central mass , surrounded by a distinct layer of somewhat elongated cellules placed perpendicularly to its surface . The body which thus ...
... cavity of the cell at each side . The structure of this body is remark- able ; it consists of a central mass , surrounded by a distinct layer of somewhat elongated cellules placed perpendicularly to its surface . The body which thus ...
Otras ediciones - Ver todas
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