A Monograph of the Freshwater Polyzoa, Including All the Known Species, Both British and Foreign |
Dentro del libro
Resultados 1-5 de 27
Página 12
In the midst of this a minute vacuola next shows itself; this becomes the cell-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 ...
In the midst of this a minute vacuola next shows itself; this becomes the cell-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 ...
Página 13
... multitudes of minute oval brilliant corpuscles were seen to have been
developed in the endocyst throughout its whole ... the longer diameter, larger at
one end than at the other, and in the large end they appear to contain a minute
cavity (fig.
... multitudes of minute oval brilliant corpuscles were seen to have been
developed in the endocyst throughout its whole ... the longer diameter, larger at
one end than at the other, and in the large end they appear to contain a minute
cavity (fig.
Página 18
If a polypide of Plumatella repens be watched while in an exserted state, different
kinds of Infusoria and other minute organic bodies may be observed to be
whirled along in the vortices caused by the action of the tentacular cilia, and
conveyed ...
If a polypide of Plumatella repens be watched while in an exserted state, different
kinds of Infusoria and other minute organic bodies may be observed to be
whirled along in the vortices caused by the action of the tentacular cilia, and
conveyed ...
Página 21
In Cristatella, a minute cavity, which looks as if it were cut off from the rest of the
tube, may be very plainly seen in the extremity of each tentacle; this condition
would also seem to exist in other genera, but it is nowhere so well marked as in ...
In Cristatella, a minute cavity, which looks as if it were cut off from the rest of the
tube, may be very plainly seen in the extremity of each tentacle; this condition
would also seem to exist in other genera, but it is nowhere so well marked as in ...
Página 22
... from the latter by the whole mass of the generative system, is the nervous
ganglion, close to which, and lying between it and the oesophagus, is a peculiar
organ in the form of a minute tubular cavity clothed with actively vibrating cilia.
... from the latter by the whole mass of the generative system, is the nervous
ganglion, close to which, and lying between it and the oesophagus, is a peculiar
organ in the form of a minute tubular cavity clothed with actively vibrating cilia.
Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
Términos y frases comunes
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance attached become Beneden bodies branches branchial British canal cavity cell characters cilia closely coenoecium complete condition connected consists constitutes contained continuous Cristatella crown 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 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 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 Freshwater 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 |
| Exportar cita | BiBTeX EndNote RefMan |