A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 1-5 de 26
Página 7
... fluid contained in a membranous sac with two openings , one for the mouth and the other for the vent ; the tentacula alone being external to the sac . Let us still further suppose the alimentary tube , by means of a system of muscles ...
... fluid contained in a membranous sac with two openings , one for the mouth and the other for the vent ; the tentacula alone being external to the sac . Let us still further suppose the alimentary tube , by means of a system of muscles ...
Página 8
... 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 , and we shall then have ...
... 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 , and we shall then have ...
Página 11
... fluid with which these chambers are filled . If we examine the endocyst histologically , we shall find that it possesses a very distinct In Lophopus , which is particularly well adapted for observing the intimate structure of this ...
... fluid with which these chambers are filled . If we examine the endocyst histologically , we shall find that it possesses a very distinct In Lophopus , which is particularly well adapted for observing the intimate structure of this ...
Página 14
... fluid , probably in the meshes of a sort of areolar tissue . I have not , however , succeeded in making out in it any distinct structure , but its membranous nature becomes at once manifest when the animal has undergone partial ...
... fluid , probably in the meshes of a sort of areolar tissue . I have not , however , succeeded in making out in it any distinct structure , but its membranous nature becomes at once manifest when the animal has undergone partial ...
Página 15
... fluids , or after month - long maceration in them ; but it is soluble in concentrated nitric , hydrochloric , and sulphuric acid . Successive boiling in water , alcohol , ether , acetic acid , and caustic potash , renders it nearly ...
... fluids , or after month - long maceration in them ; but it is soluble in concentrated nitric , hydrochloric , and sulphuric acid . Successive boiling in water , alcohol , ether , acetic acid , and caustic potash , renders it nearly ...
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