A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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... character of these beautiful little animals . With regard to the few species which I have not had an opportunity of personally examining , I have availed myself of the existence of published drawings whenever they were to be found , and ...
... character of these beautiful little animals . With regard to the few species which I have not had an opportunity of personally examining , I have availed myself of the existence of published drawings whenever they were to be found , and ...
Página 1
... characters entitling them to be viewed as a group apart from the marine representatives of the class , that the present work is to be devoted . It will be well , however , before entering into the detailed treatment of our subject , to ...
... characters entitling them to be viewed as a group apart from the marine representatives of the class , that the present work is to be devoted . It will be well , however , before entering into the detailed treatment of our subject , to ...
Página 3
... characters of polyzoal structure , must be viewed as marking out another most important epoch in the progress of zoological research . Among the converts which the discoveries of Trembley and Jussieu had made to the animal theory of ...
... characters of polyzoal structure , must be viewed as marking out another most important epoch in the progress of zoological research . Among the converts which the discoveries of Trembley and Jussieu had made to the animal theory of ...
Página 4
... characters for the determination of species , and as the grounds of classification . Numerous systems were ... character of primary importance , and , as a necessary consequence , the association of forms of a widely different plan of ...
... characters for the determination of species , and as the grounds of classification . Numerous systems were ... character of primary importance , and , as a necessary consequence , the association of forms of a widely different plan of ...
Página 7
... characters we add the presence of true sexual organs in the form of ovary and testis occupying some portion of the interior of the sac , and the negative character of the absence of all vestige of a heart , we shall have perhaps as ...
... characters we add the presence of true sexual organs in the form of ovary and testis occupying some portion of the interior of the sac , and the negative character of the absence of all vestige of a heart , we shall have perhaps as ...
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