A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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... a work devoted to the anatomy of these will apply in all essential points to that of the entire class , while such points of structure as are peculiar to the fresh - water forms will only tend to illustrate and explain the structure ...
... a work devoted to the anatomy of these will apply in all essential points to that of the entire class , while such points of structure as are peculiar to the fresh - water forms will only tend to illustrate and explain the structure ...
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 Ascidia , and was the first to designate them by a ...
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 Ascidia , and was the first to designate them by a ...
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 ...
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 ...
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 ...
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 ...
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 .
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 .
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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
action adherent admit Alcyonella alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British 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 Hancock 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 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