A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 11
If we examine the endocyst histologically , we shall find that it possesses a very
distinct In Lophopus , which is particularly well adapted for observing the intimate
structure of this membrane , we find it composed of large irregularly shaped ...
If we examine the endocyst histologically , we shall find that it possesses a very
distinct In Lophopus , which is particularly well adapted for observing the intimate
structure of this membrane , we find it composed of large irregularly shaped ...
Página 12
There can be no doubt that these fibres of the endocyst are muscular , and that it
is to their presence that the high degree of contractility enjoyed by the endocyst of
Lophopus is in a great measure , if not entirely , due . When treated with acetic ...
There can be no doubt that these fibres of the endocyst are muscular , and that it
is to their presence that the high degree of contractility enjoyed by the endocyst of
Lophopus is in a great measure , if not entirely , due . When treated with acetic ...
Página 13
A peculiar condition of the endocyst of Lophopus , though most probably only
abnormal , must be mentioned here . In specimens of this Polyzoon which had
been kept for a few days , and occasionally in some just captured , multitudes of ...
A peculiar condition of the endocyst of Lophopus , though most probably only
abnormal , must be mentioned here . In specimens of this Polyzoon which had
been kept for a few days , and occasionally in some just captured , multitudes of ...
Página 14
Lophopus , also , at first sight , conveys the impression of being destitute of an
ectocyst , and having the place of this tunic supplied by a peculiar unorganized
gelatinoid secretion , in which the colony is enveloped ( Pl . II , figs . 2 , 3 ) .
Lophopus , also , at first sight , conveys the impression of being destitute of an
ectocyst , and having the place of this tunic supplied by a peculiar unorganized
gelatinoid secretion , in which the colony is enveloped ( Pl . II , figs . 2 , 3 ) .
Página 15
In Alcyonella fungosa , and in Fredericella sultana , imperfect septa may here
and there be observed , while Cristatella and Lophopus would seem to be quite
deprived of them , the cells in these genera all opening into one another .
In Alcyonella fungosa , and in Fredericella sultana , imperfect septa may here
and there be observed , while Cristatella and Lophopus would seem to be quite
deprived of them , the cells in these genera all opening into one another .
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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