A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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Página 1
... irregular , fungus - like masses , or hard , calcareous , branchy growths , like
diminutive trees ; and now again presenting the appearance of the most delicate
and exquisitely formed sea - weed or moss , offering , even to the unassisted eye
...
... irregular , fungus - like masses , or hard , calcareous , branchy growths , like
diminutive trees ; and now again presenting the appearance of the most delicate
and exquisitely formed sea - weed or moss , offering , even to the unassisted eye
...
Página 3
It consisted of a lobed jelly - like mass , from which protruded numerous polypoid
bodies , each characterised by the possession of an elegant crown of tentacula
borne on the margin of a crescent - shaped disc . This beautiful tentacular plume
...
It consisted of a lobed jelly - like mass , from which protruded numerous polypoid
bodies , each characterised by the possession of an elegant crown of tentacula
borne on the margin of a crescent - shaped disc . This beautiful tentacular plume
...
Página 12
The first thing observed is the accumulation round the nucleus of a little mass of
granular protoplasm . 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 first thing observed is the accumulation round the nucleus of a little mass of
granular protoplasm . 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
...
Página 14
The structure of this body is remarkable ; it consists of a central mass ,
surrounded by a distinct layer of somewhat elongated cellules placed
perpendicularly to its surface . The body which thus closes up the centre of the
annular septum has ...
The structure of this body is remarkable ; it consists of a central mass ,
surrounded by a distinct layer of somewhat elongated cellules placed
perpendicularly to its surface . The body which thus closes up the centre of the
annular septum has ...
Página 18
Every now and then the fundus of the stomach , which , as has already been said
, seems to perform some function distinct from that of the rest of the organ , seizes
a portion of the alimentary mass , and retains it for a moment by an hour - glass ...
Every now and then the fundus of the stomach , which , as has already been said
, seems to perform some function distinct from that of the rest of the organ , seizes
a portion of the alimentary mass , and retains it for a moment by an hour - glass ...
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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 cćnćcium 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
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 | la Biblioteca Estatal de Baviera |
| Digitalizado | 13 Nov. 2009 |
| Largo | 119 páginas |
| Exportar cita | BiBTeX EndNote RefMan |