Jelly-fish, star-fish and sea-urchinsD. Appleton and Company, 1898 - 323 pagini |
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Pagina 27
... Effects of excising the entire Margins of Nectocalyces . Confining our attention under this heading to the naked - eyed ... effect . I have made hundreds of observations upon various species of the naked - eyed Medusæ , of all ages and ...
... Effects of excising the entire Margins of Nectocalyces . Confining our attention under this heading to the naked - eyed ... effect . I have made hundreds of observations upon various species of the naked - eyed Medusæ , of all ages and ...
Pagina 29
... Effects of excising the entire Margins of Umbrellas . Turning now to the covered - eyed division of the Medusæ , I ... effect of the opera- tion on umbrellas is neither so certain nor so com- plete as it is on swimming - bells . That ...
... Effects of excising the entire Margins of Umbrellas . Turning now to the covered - eyed division of the Medusæ , I ... effect of the opera- tion on umbrellas is neither so certain nor so com- plete as it is on swimming - bells . That ...
Pagina 30
... effect of the operation ; but this is very far from being the only factor . Upon the whole , then , although in the species of covered - eyed Medusa which I have as yet had the opportunity of examining , the effects which result from ...
... effect of the operation ; but this is very far from being the only factor . Upon the whole , then , although in the species of covered - eyed Medusa which I have as yet had the opportunity of examining , the effects which result from ...
Pagina 32
... effect of excising all the marginal tissue from between the marginal bodies and leaving the latter untouched , is not so definite as is the effect of the converse experiment just described . Moreover , allowance must here be made for ...
... effect of excising all the marginal tissue from between the marginal bodies and leaving the latter untouched , is not so definite as is the effect of the converse experiment just described . Moreover , allowance must here be made for ...
Pagina 34
... effects which are obtained by excising the entire margin of an umbrella are obtained in exactly the same degree by ... effect upon the manubrium . For hours and days after the former , in consequence of this operation , has ceased to ...
... effects which are obtained by excising the entire margin of an umbrella are obtained in exactly the same degree by ... effect upon the manubrium . For hours and days after the former , in consequence of this operation , has ceased to ...
Termeni și expresii frecvente
able ambulacral feet artificial rhythm Aurelia aurita become bell blocked brium cause ceased chloroform co-ordination continue contractile strip contractile tissue contraction contraction-waves covered-eyed Medusa crawling curare diastole direction discharge Echinoderm Echinodermata Echinus effect excising excitable tissues experiments fact feeble fibres forceps fresh water function ganglionic glycerine hour Illustrations induction shocks influence instance intervals irritability jelly-fish latter lithocyst locomotor centres manubrium marginal bodies marginal ganglia minutes movements muscle muscular mutilated naked-eyed Medusa natural rhythm nectocalyx nerve nerve-cells nerve-centre nerve-fibres nerve-ring nerve-trunks nervous network nervous system normal sea-water observed occur organ paralyzed pass pedicellariæ pedicels period of latent physiological plexus poison portion prepotent Professor pulsations radial tubes rays reflex reflex action removed response Sarsia seconds segments spasm species specimens spines spontaneity Star-fish strychnia suckers surface swimming motions swimming-bell systole tank temperature tentacles tentacular tetanus Tiaropsis indicans tion umbrella unmutilated animal wave whole