The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... the anterior pair of glands - The calcareous matter primarily an excre- tion , but secondarily serves to neutralise the acids generated during the digestive process 8-54 CHAPTER II . HABITS OF WORMS - continued . Manner.
... the anterior pair of glands - The calcareous matter primarily an excre- tion , but secondarily serves to neutralise the acids generated during the digestive process 8-54 CHAPTER II . HABITS OF WORMS - continued . Manner.
Pagina 7
... Manner in which worms seize objects - Their power suction — The instinct of plugging up the mouths of their burrows - Stones piled over the burrows— The advantages thus gained - Intelligence shown by worms in their manner of plugging up ...
... Manner in which worms seize objects - Their power suction — The instinct of plugging up the mouths of their burrows - Stones piled over the burrows— The advantages thus gained - Intelligence shown by worms in their manner of plugging up ...
Pagina 16
... manner for the sake of breathing fresh air , for we have seen that they can live for a long time under water . I believe that they lie near the surface for the sake of warmth , es- pecially in the morning ; and we shall here- after find ...
... manner for the sake of breathing fresh air , for we have seen that they can live for a long time under water . I believe that they lie near the surface for the sake of warmth , es- pecially in the morning ; and we shall here- after find ...
Pagina 22
... manner excites their cerebral ganglia , It appeared at first probable that the dif ferent manner in which they were affected on different occasions might be explained , either by the degree 22 CHAP . I. HABITS OF WORMS .
... manner excites their cerebral ganglia , It appeared at first probable that the dif ferent manner in which they were affected on different occasions might be explained , either by the degree 22 CHAP . I. HABITS OF WORMS .
Pagina 23
... a reflex one . The irritation of the cerebral ganglia appears to cause certain muscles to contract in an inevitable manner , independently of the will or consciousness cf the animal , as if it were СПАР . І. 23 THEIR SENSES .
... a reflex one . The irritation of the cerebral ganglia appears to cause certain muscles to contract in an inevitable manner , independently of the will or consciousness cf the animal , as if it were СПАР . І. 23 THEIR SENSES .
Alte ediții - Afișează-le pe toate
The Formation of Vegetable Mould: Through the Action of Worms, with ... Charles Darwin Vizualizare completă - 1896 |
The Formation of Vegetable Mould, Through the Action of Worms, with ... Charles Darwin Vizualizare completă - 1898 |
The formation of vegetable mould, through the action of worms, with Charles Darwin Vizualizare completă - 1897 |
Termeni și expresii frecvente
accumulated acetic acid acid action of worms alimentary canal amount angle animals apex appear basal base Beaulieu Abbey beneath the surface blown bodies brought buried burrows calciferous carbonic acid cells cent chalk Cloth concrete covered depth disintegration doubt dragged drawn earth feet field flints floor formed fragments gizzards glands grass ground heavy rain Hensen holes Illustrations inches beneath inches deep inches in thickness inches thick intestines JOSEPH LE CONTE Knole Park lamellæ land large number larvæ layer leaf leaves ledges Leith Hill Place lime Maer Hall manner matter mortar mouths nearly objects observed particles pasture pavement penetrated Perrier petioles pharynx places ploughed plugging pots probably Roman villa rubbish sand seen seized side Silchester slope soil species square yard Stonehenge stones subsided swallowed tesselated tiles tips trench triangles triturated turf upper vegetable mould walls washed weather weight whilst worm-castings worms
Pasaje populare
Pagina 1 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
Pagina 2 - XVIII. THE NATURE OF LIGHT. With a General Account of Physical Optics.
Pagina 2 - XXIII. Studies in Spectrum Analysis. By J. Norman Lockyer, FRS With six photographic Illustrations of Spectra, and numerous engravings on Wood.