A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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In 1755 , he published his famous ' Essay on the Natural History of Corallines , **
a work which in profuseness and fidelity of observation , in lucidity of description ,
and in pictorial illustration , seemed to leave little else to be accomplished .
In 1755 , he published his famous ' Essay on the Natural History of Corallines , **
a work which in profuseness and fidelity of observation , in lucidity of description ,
and in pictorial illustration , seemed to leave little else to be accomplished .
Página 73
In 1851 , we find several communications on the subject of the fresh - water
Polyzoa of Pennsylvania , presented by Dr. Joseph Leidy to the Academy of
Natural Sciences of Philadelphia . I In these the author describes some new
species of ...
In 1851 , we find several communications on the subject of the fresh - water
Polyzoa of Pennsylvania , presented by Dr. Joseph Leidy to the Academy of
Natural Sciences of Philadelphia . I In these the author describes some new
species of ...
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Natural size . 2. The same magnified . 3. A young specimen of the same
magnified , with the two valves of the statoblast still adhering to it . 4. Longitudinal
section of upper part of the cell of A. flabellum , showing certain anatomical
details . 5.
Natural size . 2. The same magnified . 3. A young specimen of the same
magnified , with the two valves of the statoblast still adhering to it . 4. Longitudinal
section of upper part of the cell of A. flabellum , showing certain anatomical
details . 5.
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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 alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British canal cavity cell characters cilia closely complete condition connected consists constitutes contained continuous corresponding 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 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