A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 5
He then goes on to compare the walls of the body cavity in Gorgonia , Isis ,
Alcyonium , & c . , to the tunics of an Ascidian or the mantle of an ordinary Mollusc
, a comparison which plainly shows that he had no idea whatever of the relation
in ...
He then goes on to compare the walls of the body cavity in Gorgonia , Isis ,
Alcyonium , & c . , to the tunics of an Ascidian or the mantle of an ordinary Mollusc
, a comparison which plainly shows that he had no idea whatever of the relation
in ...
Página 8
The Perigastric ** space is the space included between the walls of the endocyst
and the alimentary canal . The terms now enumerated are such as I believe the
nature of the subject strictly requires . I employed most of them in my “ Report on
...
The Perigastric ** space is the space included between the walls of the endocyst
and the alimentary canal . The terms now enumerated are such as I believe the
nature of the subject strictly requires . I employed most of them in my “ Report on
...
Página 11
9 ) ; the nucleus , with its nucleolus , are imbedded in the walls of the cell . The
intervening substance , which , before the application of the acetic acid ,
appeared simply granular , is now seen to * In Pedicellina , and apparently also
in ...
9 ) ; the nucleus , with its nucleolus , are imbedded in the walls of the cell . The
intervening substance , which , before the application of the acetic acid ,
appeared simply granular , is now seen to * In Pedicellina , and apparently also
in ...
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 ...
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 ...
Página 13
These corpuscles are not confined to the endocyst , but are also found at the
same time in other tissues , especially in the substance of the funiculus , which ,
as will be afterwards shown , connects the fundus of the stomach with the walls of
the ...
These corpuscles are not confined to the endocyst , but are also found at the
same time in other tissues , especially in the substance of the funiculus , which ,
as will be afterwards shown , connects the fundus of the stomach with the walls of
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 canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium 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 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 represented 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