A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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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 20th 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 20th of an inch in the longer ...
Página 86
It is quite true that , in its young state , Alcyonella has its tubes distinct , creeping
along the surface of the supporting body , and in this condition , I admit that it
cannot be distinguished from a Plumatella , but it is only in its early youth that it ...
It is quite true that , in its young state , Alcyonella has its tubes distinct , creeping
along the surface of the supporting body , and in this condition , I admit that it
cannot be distinguished from a Plumatella , but it is only in its early youth that it ...
Página 89
When removed from the water , the polypides shrink back into their cells , and the
surface then seems covered with a gelatinous investment , caused by the soft ,
papilla - like , extremities of the tubes . These extremities contract no adhesion ...
When removed from the water , the polypides shrink back into their cells , and the
surface then seems covered with a gelatinous investment , caused by the soft ,
papilla - like , extremities of the tubes . These extremities contract no adhesion ...
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Términos y frases comunes
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British canal cavity cell character cilia closely complete condition connected consists constitutes contained continuous 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 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 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 | Universidad de Illinois en Urbana-Champaign |
| Digitalizado | 13 Oct. 2015 |
| Largo | 119 páginas |
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