A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
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... exceedingly natural group , and possess great uniformity of structure , and as
the fresh - water species afford fine typical examples of the class , a work devoted
to the anatomy of these will apply in all essential points to that of the entire class ...
... exceedingly natural group , and possess great uniformity of structure , and as
the fresh - water species afford fine typical examples of the class , a work devoted
to the anatomy of these will apply in all essential points to that of the entire class ...
Página 5
He traced the entire course of the alimentary canal , and made himself master of
almost every important point in their structure . He also perceived their close
relation to the compound Ascidiæ , and was the first to designate them by a
distinct ...
He traced the entire course of the alimentary canal , and made himself master of
almost every important point in their structure . He also perceived their close
relation to the compound Ascidiæ , and was the first to designate them by a
distinct ...
Página 6
In this work he proposed a new classification of the so - called polypes , dividing
the entire group into two great sections — the Anthozoa and the Bryozoa ; the
former embraced the true radiate forms , the latter corresponded to the Polyzoa of
...
In this work he proposed a new classification of the so - called polypes , dividing
the entire group into two great sections — the Anthozoa and the Bryozoa ; the
former embraced the true radiate forms , the latter corresponded to the Polyzoa of
...
Página 8
surface a secondary investment of very various constitution in the different groups
; and we may , moreover , conceive of the entire animal with its digestive tube ,
tentacula , ganglion , muscles , generative organs , circumambient fluid , and ...
surface a secondary investment of very various constitution in the different groups
; and we may , moreover , conceive of the entire animal with its digestive tube ,
tentacula , ganglion , muscles , generative organs , circumambient fluid , and ...
Página 13
14 ) , which under the action of acetic acid dilates and fills nearly the entire
corpuscle ( fig . 15 ) . The situation of these bodies in a tubular network in the
substance of the endocyst is a fact of great interest . It is nearly certain that
whatever may ...
14 ) , which under the action of acetic acid dilates and fills nearly the entire
corpuscle ( fig . 15 ) . The situation of these bodies in a tubular network in the
substance of the endocyst is a fact of great interest . It is nearly certain that
whatever may ...
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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 canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British cænæcium 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 organ orifice Original figures Paludicella passes Plumatella Plumatella repens Polype polypide Polyzoon portion present published relations repens represented 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