The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... beneath the turf , but still forming a layer . This apparent sinking of superficial bodies is due , as was first suggested to me by Mr. Wedgwood of Maer Hall in Staffordshire , to the large quantity of fine earth continually brought up ...
... beneath the turf , but still forming a layer . This apparent sinking of superficial bodies is due , as was first suggested to me by Mr. Wedgwood of Maer Hall in Staffordshire , to the large quantity of fine earth continually brought up ...
Pagina 11
... Beneath large trees few castings can be found during certain seasons of the year , and this is apparently due to the moisture having been sucked out of the ground by the innu- merable roots of the trees ; for such places may be seen ...
... Beneath large trees few castings can be found during certain seasons of the year , and this is apparently due to the moisture having been sucked out of the ground by the innu- merable roots of the trees ; for such places may be seen ...
Pagina 12
With Observations on Their Habits Charles Darwin. Park , where the ground beneath was bare of all vegetation , not a single casting could be found over wide spaces , even during the autumn . Nevertheless , castings were abun- dant on ...
With Observations on Their Habits Charles Darwin. Park , where the ground beneath was bare of all vegetation , not a single casting could be found over wide spaces , even during the autumn . Nevertheless , castings were abun- dant on ...
Pagina 15
... beneath the mouths of their burrows . I have occasionally noticed the same fact with worms kept in * De Lumbrici terrestris , & c . , P. 14 . pots in the house ; so that by looking down CHAP . I. WANDER FROM THEIR BURROWS . 15.
... beneath the mouths of their burrows . I have occasionally noticed the same fact with worms kept in * De Lumbrici terrestris , & c . , P. 14 . pots in the house ; so that by looking down CHAP . I. WANDER FROM THEIR BURROWS . 15.
Pagina 22
... beneath water in a saucer , and it instantly withdrew into its burrow . In all cases the duration of the light , unless extremely feeble , made a great difference in the result ; for worms left exposed before a paraffin lamp or a candle ...
... beneath water in a saucer , and it instantly withdrew into its burrow . In all cases the duration of the light , unless extremely feeble , made a great difference in the result ; for worms left exposed before a paraffin lamp or a candle ...
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.