Jelly-fish, star-fish and sea-urchinsD. Appleton and Company, 1898 - 323 pagini |
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Pagina
... SPECIES . By Professor A. DE QUATREFAGES , Museum of Natural History , Paris . $ 2.00 . 28. THE CRAYFISH : An Introduction to the Study of Zcology . By T. H. HUXLEY , F. R. S. With 82 Illustrations . $ 1.75 . 29. THE ATOMIC THEORY . By ...
... SPECIES . By Professor A. DE QUATREFAGES , Museum of Natural History , Paris . $ 2.00 . 28. THE CRAYFISH : An Introduction to the Study of Zcology . By T. H. HUXLEY , F. R. S. With 82 Illustrations . $ 1.75 . 29. THE ATOMIC THEORY . By ...
Pagina
... SPECIES . By Professor A. DE QUATREFAGES , Museum of Natural History , Paris . $ 2.00 . 28. THE CRAYFISH : An Introduction to the Study of Zoology . By T. H. HUXLEY , F. R. S. With 82 Illustrations . $ 1.75 . 29. THE ATOMIC THEORY . By ...
... SPECIES . By Professor A. DE QUATREFAGES , Museum of Natural History , Paris . $ 2.00 . 28. THE CRAYFISH : An Introduction to the Study of Zoology . By T. H. HUXLEY , F. R. S. With 82 Illustrations . $ 1.75 . 29. THE ATOMIC THEORY . By ...
Pagina 12
... species . In all the covered - eyed species these marginal bodies occur in the form of little bags of crystals ( therefore they are called " litho- cysts " ) , which are protected by curiously formed " hoods " or " covers " of ...
... species . In all the covered - eyed species these marginal bodies occur in the form of little bags of crystals ( therefore they are called " litho- cysts " ) , which are protected by curiously formed " hoods " or " covers " of ...
Pagina 10
... species of Medusa vary from that of a small pea to that of a large umbrella having streamers a hundred feet long . The general form of these animais varies in different species from that of a thimble ( Fig . 1 ) to that of a bowl , a ...
... species of Medusa vary from that of a small pea to that of a large umbrella having streamers a hundred feet long . The general form of these animais varies in different species from that of a thimble ( Fig . 1 ) to that of a bowl , a ...
Pagina 11
George John Romanes. extends to a tolerably close imitation by different species of the various forms which are characteristic of different species of mushrooms , from the thimble- like kinds to the saucer - like kinds . Moreover , this ...
George John Romanes. extends to a tolerably close imitation by different species of the various forms which are characteristic of different species of mushrooms , from the thimble- like kinds to the saucer - like kinds . Moreover , this ...
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