A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
Dentro del libro
Resultados 1-5 de 38
Página
Both these genera , each consisting of a single species , are confined to the United States of America , where they were recently discovered by Dr. Leidy , who has given us a description of them , which , however , is purely ...
Both these genera , each consisting of a single species , are confined to the United States of America , where they were recently discovered by Dr. Leidy , who has given us a description of them , which , however , is purely ...
Página 7
Let us imagine an alimentary canal , consisting of œsophagus , stomach , and intestine , to be furnished at its origin with long ciliated tentacula , and to have a single nervous ganglion situated on one side of the oesophagus .
Let us imagine an alimentary canal , consisting of œsophagus , stomach , and intestine , to be furnished at its origin with long ciliated tentacula , and to have a single nervous ganglion situated on one side of the oesophagus .
Página 11
It must not , however , be supposed that there is here any proper orifice , the retraction and exsertion consisting merely in an invagination and evagination of the anterior part of the cell . The cœnocium , in every case , except in ...
It must not , however , be supposed that there is here any proper orifice , the retraction and exsertion consisting merely in an invagination and evagination of the anterior part of the cell . The cœnocium , in every case , except in ...
Página 12
consist almost entirely of bodies exactly resembling the nuclei of the cells ; some of these intercellular nuclei contain two nucleoli , and seem to be undergoing division , while round others a young cell may be seen in various stages ...
consist almost entirely of bodies exactly resembling the nuclei of the cells ; some of these intercellular nuclei contain two nucleoli , and seem to be undergoing division , while round others a young cell may be seen in various stages ...
Página 14
This gelatinous - looking investment is , however , a true ectocyst ; it consists of a membranous tunic of great delicacy , apparently enclosing a perfectly transparent and colourless fluid , probably in the meshes of a sort of areolar ...
This gelatinous - looking investment is , however , a true ectocyst ; it consists of a membranous tunic of great delicacy , apparently enclosing a perfectly transparent and colourless fluid , probably in the meshes of a sort of areolar ...
Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
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
action adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella described detected disc distinct Dumortier ectocyst edit endocyst entire epistome examined existence extending external extremity fibres fluid Fredericella fresh-water Polyzoa genera genus Gervais gives Hancock Hist important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organ orifice Original figures Paludicella passes Plumatella Plumatella repens Polype polypide Polyzoon portion present published relations repens resemblance retraction retractor Rösel seen separated sheath side space species specimens statoblasts stomach stones structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young
Información bibliográfica
| Título | A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign Volumen18 de ¬The Ray Society |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
| Exportar cita | BiBTeX EndNote RefMan |