A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 11
The cænæcium , in every case , except in Cristatella , is composed of two distinct
membranes , which must be carefully ... which is particularly well adapted for
observing the intimate structure of this membrane , we find it composed of large ...
The cænæcium , in every case , except in Cristatella , is composed of two distinct
membranes , which must be carefully ... which is particularly well adapted for
observing the intimate structure of this membrane , we find it composed of large ...
Página 13
They were not scattered at random through this membrane , but were contained
in the interior of a system of tubes which formed a network in the substance of the
endocyst ( Pl . II , fig . 13 ) . They are about the sooth of an inch in the longer ...
They were not scattered at random through this membrane , but were contained
in the interior of a system of tubes which formed a network in the substance of the
endocyst ( Pl . II , fig . 13 ) . They are about the sooth of an inch in the longer ...
Página 14
... while M. Van Beneden believes it to be an accidental investment acquired by
the animal during confinement . † The ectocyst in Paludicella is formed of a
smooth pergamentaceous semi - transparent membrane , free from earthy
deposit ...
... while M. Van Beneden believes it to be an accidental investment acquired by
the animal during confinement . † The ectocyst in Paludicella is formed of a
smooth pergamentaceous semi - transparent membrane , free from earthy
deposit ...
Página 17
The third or most external layer is a thin membrane ( Pl . III , fig . 7 , x ) ; it
possesses also an undoubted cellular structure ; it admits of being traced
uninterruptedly over the whole tract of the alimentary canal , and , on the
application of acetic ...
The third or most external layer is a thin membrane ( Pl . III , fig . 7 , x ) ; it
possesses also an undoubted cellular structure ; it admits of being traced
uninterruptedly over the whole tract of the alimentary canal , and , on the
application of acetic ...
Página 20
The internal layer is a delicate transparent membrane , in which I could detect no
trace of approximated at their extremities , and thus , instead of constituting an
open crescent , they form a ring enclosing a space which embraces within it the ...
The internal layer is a delicate transparent membrane , in which I could detect no
trace of approximated at their extremities , and thus , instead of constituting an
open crescent , they form a ring enclosing a space which embraces within it 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 Species ... George James Allman Sin vista previa disponible - 2009 |
Términos y frases comunes
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous corresponding 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 important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organs 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 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, Tema 28 A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, George James Allman Volumen13 de DE-601)130488305: Ray Society Publications, Ray Society Ray Society, Ray Society Volumen28 de Ray society ... [Publications |
| Autor | George James Allman |
| Editor | Ray Society, 1856 |
| Procedencia del original | Biblioteca Nacional de Austria |
| Digitalizado | 12 Mayo 2011 |
| Largo | 119 páginas |
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