A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
Dentro del libro
Página 8
... generative organs , circumambient fluid , and investing sacs , repeating itself
by gemmation , and thus producing one or more precisely similar systems
holding a definite position relatively to one another , while all continue
organically united ...
... generative organs , circumambient fluid , and investing sacs , repeating itself
by gemmation , and thus producing one or more precisely similar systems
holding a definite position relatively to one another , while all continue
organically united ...
Página 10
... to indicate the primary subdivisions of the marine Gymnolæmatous Polyzoa . (
Voyage of “ The Rattlesnake , " vol . i , Appendix , p . 346. ) 2 . ANATOMY . A.
Organs for the Preservation of 10 ORDERS AND SUB - ORDERS OF POLYZOA .
... to indicate the primary subdivisions of the marine Gymnolæmatous Polyzoa . (
Voyage of “ The Rattlesnake , " vol . i , Appendix , p . 346. ) 2 . ANATOMY . A.
Organs for the Preservation of 10 ORDERS AND SUB - ORDERS OF POLYZOA .
Página 15
... the test of the Tunicata , unless more elaborately conducted researches shall
prove the essential constituent of the tissue in question be identical with the more
highly nitrogenized conchiolin of ordinary Mollusca . * ( 2. ) Organs of Digestion .
... the test of the Tunicata , unless more elaborately conducted researches shall
prove the essential constituent of the tissue in question be identical with the more
highly nitrogenized conchiolin of ordinary Mollusca . * ( 2. ) Organs of Digestion .
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 ...
Página 22
... unable to follow this organ through its whole extent , or determine its exact
relations , as it appeared to lose itself beneath the opacity of the surrounding
structures . Its situation would suggest the probability of its being an organ of
sense .
... unable to follow this organ through its whole extent , or determine its exact
relations , as it appeared to lose itself beneath the opacity of the surrounding
structures . Its situation would suggest the probability of its being an organ of
sense .
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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 alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium canal cavity cell character 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 structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young