A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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... my excuse for the lateness of its appearance . MONOGRAPH OF THE FRESH - WATER POLYZOA . Among the viii PREFACE .
... my excuse for the lateness of its appearance . MONOGRAPH OF THE FRESH - WATER POLYZOA . Among the viii PREFACE .
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... presenting the appearance of the most delicate and exquisitely formed sea - weed or moss , offering , even to the unassisted eye , in the endless repetition of the same element of form , objects of surpassing symmetry and beauty .
... presenting the appearance of the most delicate and exquisitely formed sea - weed or moss , offering , even to the unassisted eye , in the endless repetition of the same element of form , objects of surpassing symmetry and beauty .
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The perfectly transparent wide origin of this line gives to the orifice of the cell the appearance of having a deep notch on one side . In Fredericella a slightly prominent keel is also apparent , but the notch - like transparent space ...
The perfectly transparent wide origin of this line gives to the orifice of the cell the appearance of having a deep notch on one side . In Fredericella a slightly prominent keel is also apparent , but the notch - like transparent space ...
Página 18
The mouth and upper part of the ćsophagus are in all the genera clothed with vibratile cilia , but I could detect no appearance of cilia further than a short distance down this tube . The structure of the intestine closely ...
The mouth and upper part of the ćsophagus are in all the genera clothed with vibratile cilia , but I could detect no appearance of cilia further than a short distance down this tube . The structure of the intestine closely ...
Página 19
The general appearance of Pedicellina is that of a gymnolćmatous Polyzoon with its nearly spherical cell seated on the extremity of a long peduncle . The gymnolćmatous character , however , is wholly deceptive , and depends on a ...
The general appearance of Pedicellina is that of a gymnolćmatous Polyzoon with its nearly spherical cell seated on the extremity of a long peduncle . The gymnolćmatous character , however , is wholly deceptive , and depends on a ...
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Otras ediciones - Ver todas
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