Jelly-fish, star-fish and sea-urchinsD. Appleton and Company, 1898 - 323 pagini |
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Pagina
... Side . By ALFRED SIDGWICK , B. A. , Oxon . $ 1.75 . 48. ORIGIN OF CULTIVATED PLANTS . By ALPHONSE DE CANDOLLE . $ 2.00 . 49. JELLY - FISH , STAR - FISH , AND SEA - URCHINS . A Research on Primi- tive Nervous Systems . By GEORGE J ...
... Side . By ALFRED SIDGWICK , B. A. , Oxon . $ 1.75 . 48. ORIGIN OF CULTIVATED PLANTS . By ALPHONSE DE CANDOLLE . $ 2.00 . 49. JELLY - FISH , STAR - FISH , AND SEA - URCHINS . A Research on Primi- tive Nervous Systems . By GEORGE J ...
Pagina
... Side . By ALFRED SIDGWICK , B. A. , Oxon . $ 1.75 . 48. ORIGIN OF CULTIVATED PLANTS . By ALPHONSE DE CANDOLLE . $ 2.00 . 49. JELLY - FISH , STAR - FISH , AND SEA - URCHINS . A Research on Primi- tive Nervous Systems . By GEORGE J ...
... Side . By ALFRED SIDGWICK , B. A. , Oxon . $ 1.75 . 48. ORIGIN OF CULTIVATED PLANTS . By ALPHONSE DE CANDOLLE . $ 2.00 . 49. JELLY - FISH , STAR - FISH , AND SEA - URCHINS . A Research on Primi- tive Nervous Systems . By GEORGE J ...
Pagina 20
... side of the same . Histologically they consist of cells of special sensation , together with a thick layer of slender nerve - fibres . Ganglion- cells , however , are absent , so that the nerve - fibres are merely processes of ...
... side of the same . Histologically they consist of cells of special sensation , together with a thick layer of slender nerve - fibres . Ganglion- cells , however , are absent , so that the nerve - fibres are merely processes of ...
Pagina 41
... side of the jar which was nearest to the light . Indeed , close against the glass they formed an almost solid mass , which followed the light wherever it was moved . The individuals composing this mass dashed them- selves against the ...
... side of the jar which was nearest to the light . Indeed , close against the glass they formed an almost solid mass , which followed the light wherever it was moved . The individuals composing this mass dashed them- selves against the ...
Pagina 57
... side of the umbrella from that on which they rested while constructing the staircase . On now throwing in another shock at this part of the contractile tissue so remote from the part previously stimulated , the response was a maximum ...
... side of the umbrella from that on which they rested while constructing the staircase . On now throwing in another shock at this part of the contractile tissue so remote from the part previously stimulated , the response was a maximum ...
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