A Monograph of the Freshwater Polyzoa, Including All the Known Species, Both British and Foreign |
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... many hundred specimens have thus passed beneath the dissecting needle. Of
all the known fresh-water genera there are but two, namely, Pectinatella and
Urnatella, which I have not yet had an opportunity of examining in a living
condition.
... many hundred specimens have thus passed beneath the dissecting needle. Of
all the known fresh-water genera there are but two, namely, Pectinatella and
Urnatella, which I have not yet had an opportunity of examining in a living
condition.
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To the many friends who, by the communication of specimens, and by much
valuable information, have kindly assisted me in the preparation of this
monograph, I beg once for all to return my best thanks. My acknowledgments are
especially ...
To the many friends who, by the communication of specimens, and by much
valuable information, have kindly assisted me in the preparation of this
monograph, I beg once for all to return my best thanks. My acknowledgments are
especially ...
Página 13
In specimens of this Polyzoon which had been kept for a few days, and
occasionally in some just captured, multitudes of minute oval brilliant corpuscles
were seen to have been developed in the endocyst throughout its whole extent.
In specimens of this Polyzoon which had been kept for a few days, and
occasionally in some just captured, multitudes of minute oval brilliant corpuscles
were seen to have been developed in the endocyst throughout its whole extent.
Página 35
If a specimen of Alcyonella fungosa be cut into small pieces, under water, in the
month of July or August, the ciliated embryos will be liberated in abundance, and
may be examined with facility. Gemmation.—The development of gemmae has ...
If a specimen of Alcyonella fungosa be cut into small pieces, under water, in the
month of July or August, the ciliated embryos will be liberated in abundance, and
may be examined with facility. Gemmation.—The development of gemmae has ...
Página 40
After the decay of the coenoecium many of these attached statoblasts may be
seen adherent to the stone or other body on which the specimen had developed
itself, and to which they are now connected in lines (Pl. VII, figs. 5, 10) through the
...
After the decay of the coenoecium many of these attached statoblasts may be
seen adherent to the stone or other body on which the specimen had developed
itself, and to which they are now connected in lines (Pl. VII, figs. 5, 10) through the
...
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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 ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
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 |