Philosophical Transactions of the Royal Society of London, Volume 174,Deel 3W. Bowyer and J. Nichols for Lockyer Davis, printer to the Royal Society, 1884 |
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Pagina 759
... septum , and both differ in origin from that of the body- wall . It is evident that the supporting lamella , though probably containing cellular elements derived both from the ectoderm and entoderm , is not in any sense a special ...
... septum , and both differ in origin from that of the body- wall . It is evident that the supporting lamella , though probably containing cellular elements derived both from the ectoderm and entoderm , is not in any sense a special ...
Pagina 762
... septum , a structure which is found in the Pennatulacea alone . Hence it will be convenient to describe separately the development of the two forms of septa . a . Formation of the radial septa . Although the peduncular septum makes its ...
... septum , a structure which is found in the Pennatulacea alone . Hence it will be convenient to describe separately the development of the two forms of septa . a . Formation of the radial septa . Although the peduncular septum makes its ...
Pagina 763
... , and sometimes without interrupting its outline ( fig . 147 ) . In most cases , however , the lamella of the body - wall bends inwards slightly at the point where the septum meets it , DR . E. B. WILSON ON THE DEVELOPMENT OF RENILLA . 763.
... , and sometimes without interrupting its outline ( fig . 147 ) . In most cases , however , the lamella of the body - wall bends inwards slightly at the point where the septum meets it , DR . E. B. WILSON ON THE DEVELOPMENT OF RENILLA . 763.
Pagina 764
... septum . In still other cases this fold appears to close up , forming a small triangular space at the root of the septum in which one or two ectoderm cells appear , as shown in fig . 149 , n . These never extend far out into the septum ...
... septum . In still other cases this fold appears to close up , forming a small triangular space at the root of the septum in which one or two ectoderm cells appear , as shown in fig . 149 , n . These never extend far out into the septum ...
Pagina 765
... septum at the point u ( fig . 104 ) . In some cases it is difficult to trace the septum up to the peduncular septum , especially when the larva is fully expanded . In fact , I completely overlooked their connexion in my earlier paper ...
... septum at the point u ( fig . 104 ) . In some cases it is difficult to trace the septum up to the peduncular septum , especially when the larva is fully expanded . In fact , I completely overlooked their connexion in my earlier paper ...
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Veelvoorkomende woorden en zinsdelen
Alcyonaria appearance axial polyp axis basals become bilateral body buds calyx-teeth Carbonic acid carcass cavity cell-wall Chlor cilia citron band cleavage colony colour condenser connexion critical velocity deutoplasm diameter dorsal earth eddies embryo endosperm entire animal entoderm cells experiments fluid gauge granular HOFMANN's blue interradial iodine KÖLLIKER lamella larva larvæ lateral layer lime live-weight longitudinal MDCCCLXXXIII mesenterial mesenterial filaments methyl violet middle lamella nuclei observed oesophagus offal oxalate peduncular septum Pennatulacea phosphoric acid picric acid pigs pipes pit membrane plasmolysis Plate 70 portion potash precipitate protoplasm pulvinus Pure ash quantity radials radiant matter tube reagent Renilla Reteocrinus segmentation separated septa sexual polyps shown in fig side siphonoglyphe solution specimen spectrum spheres spicules stage stained stomodæum structure substance sulphate sulphuric acid supporting lamella temperature tentacles terbia tissue Trace Trace Trace Transverse section ventral chamber vitellus wall yttria yttrium Zinc Iod zooids