The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 64
... middle parts . It seemed more espe- cially desirable to do this in the case of plants not natives to our country ; for although the habit of dragging leaves into their burrows is undoubtedly instinctive with worms , yet instinct could ...
... middle parts . It seemed more espe- cially desirable to do this in the case of plants not natives to our country ; for although the habit of dragging leaves into their burrows is undoubtedly instinctive with worms , yet instinct could ...
Pagina 65
... middle was seized . If both these alternatives are ex- cluded , intelligence alone is left ; unless the worm in each case first tries many different methods , and follows that alone which proves possible or the most easy ; but to act in ...
... middle was seized . If both these alternatives are ex- cluded , intelligence alone is left ; unless the worm in each case first tries many different methods , and follows that alone which proves possible or the most easy ; but to act in ...
Pagina 66
... middle . This alone is almost suffi- Icient to show that chance does not determine the manner in which leaves are dragged into the burrows . Of the above 227 leaves , 70 consisted of the fallen leaves of the common lime - tree , which ...
... middle . This alone is almost suffi- Icient to show that chance does not determine the manner in which leaves are dragged into the burrows . Of the above 227 leaves , 70 consisted of the fallen leaves of the common lime - tree , which ...
Pagina 67
... middle , and of some few having been drawn in by the base , renders it improbable that the worms first tried to draw in most of the leaves by one or both of these methods , and that they after- wards drew in 79 per cent . by their tips ...
... middle , and of some few having been drawn in by the base , renders it improbable that the worms first tried to draw in most of the leaves by one or both of these methods , and that they after- wards drew in 79 per cent . by their tips ...
Pagina 72
... cut - off ends . The worms in confinement often seized the needles near the middle and drew them to- wards the mouths of their burrows ; and one worm tried in a senseless manner to drag them into 72 CHAP . II . HABITS OF WORMS .
... cut - off ends . The worms in confinement often seized the needles near the middle and drew them to- wards the mouths of their burrows ; and one worm tried in a senseless manner to drag them into 72 CHAP . II . HABITS OF WORMS .
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 fragmente - 1989 |
The Formation of Vegetable Mould, Through the Action of Worms, with ... Charles Darwin Nu există previzualizare disponibilă - 2016 |
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.