A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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They are chiefly inhabitants of the sea , where they may be witnessed under numerous plant - like guises ; now spreading like a lichen over submerged stones , or old shells , or the broad fronds of Laminaria and other sea - weeds ...
They are chiefly inhabitants of the sea , where they may be witnessed under numerous plant - like guises ; now spreading like a lichen over submerged stones , or old shells , or the broad fronds of Laminaria and other sea - weeds ...
Página 40
After the decay of the concecium 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 .
After the decay of the concecium 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 .
Página 74
subalpine lakes or of rapid rivulets , where , by close adhesion to the under surface of stones , they avoid the danger of being carried away by the current of the stream ; while others prefer slowly running rivers or the sluggish ...
subalpine lakes or of rapid rivulets , where , by close adhesion to the under surface of stones , they avoid the danger of being carried away by the current of the stream ; while others prefer slowly running rivers or the sluggish ...
Página 75
... attached to the under side of floating leaves , or upon the stones at the margin of lakes , where they are exposed to the ripple as it breaks upon the shore . 76 4 . CONDENSED SYNOPSIS OF THE ORDERS , SUB GEOGRAPHICAL DISTRIBUTION .
... attached to the under side of floating leaves , or upon the stones at the margin of lakes , where they are exposed to the ripple as it breaks upon the shore . 76 4 . CONDENSED SYNOPSIS OF THE ORDERS , SUB GEOGRAPHICAL DISTRIBUTION .
Página 78
In clear lakes and ponds , where it creeps slowly over the upper side of submerged stones and the stems of aquatic plants , delighting in sunlight . LOCALITIES . — British : A millpond near Little Baddow , Essex ; Union Canal ...
In clear lakes and ponds , where it creeps slowly over the upper side of submerged stones and the stems of aquatic plants , delighting in sunlight . LOCALITIES . — British : A millpond near Little Baddow , Essex ; Union Canal ...
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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 cćnćcium canal 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 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 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 |
| Largo | 119 páginas |
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