Jelly-fish, star-fish and sea-urchinsD. Appleton and Company, 1898 - 323 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 33
Pagina 32
... motions as before . In the great majority of cases , however , the activity of these motions is conspicuously diminished . The effect of excising all the marginal tissue from between the marginal bodies and leaving the latter untouched ...
... motions as before . In the great majority of cases , however , the activity of these motions is conspicuously diminished . The effect of excising all the marginal tissue from between the marginal bodies and leaving the latter untouched ...
Pagina 38
... motions of the unmutilated animal . of It is somewhat difficult , in the case of paralyzed swimming organs , to prove the occurrence of a contraction in response to thermal stimulation , from the fact that while these tissues are not ...
... motions of the unmutilated animal . of It is somewhat difficult , in the case of paralyzed swimming organs , to prove the occurrence of a contraction in response to thermal stimulation , from the fact that while these tissues are not ...
Pagina 39
... motions had come on , and then suddenly darkening . In no case , however , under these circumstances , did I obtain any response ; so that I cannot doubt it is the light per se , and not the sudden nature of the transition from darkness ...
... motions had come on , and then suddenly darkening . In no case , however , under these circumstances , did I obtain any response ; so that I cannot doubt it is the light per se , and not the sudden nature of the transition from darkness ...
Pagina 84
... having been almost , become quite able to draft off sufficient molecular motion , or stimulating influence , to carry on the contraction - waves beyond the areas of previous 84 JELLY - FISH , STAR - FISH , AND SEA - URCHINS .
... having been almost , become quite able to draft off sufficient molecular motion , or stimulating influence , to carry on the contraction - waves beyond the areas of previous 84 JELLY - FISH , STAR - FISH , AND SEA - URCHINS .
Pagina 109
... motion , the extremity of the manubrium is eventually brought , with unerring precision , to meet the in - bent portion of the necto- calyx . I here introduce a drawing of more than life - size to render a better idea of this pointing ...
... motion , the extremity of the manubrium is eventually brought , with unerring precision , to meet the in - bent portion of the necto- calyx . I here introduce a drawing of more than life - size to render a better idea of this pointing ...
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