The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... bodies of worms - The action of these acids facilitated by the continued movement of the particles of earth A thick bed of mould checks the disintegration of the underlying soil and rocks - Particles of stone worn or triturated in the ...
... bodies of worms - The action of these acids facilitated by the continued movement of the particles of earth A thick bed of mould checks the disintegration of the underlying soil and rocks - Particles of stone worn or triturated in the ...
Pagina 7
... 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 to the surface by worms in the form of castings . These castings are sooner or later ...
... 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 to the surface by worms in the form of castings . These castings are sooner or later ...
Pagina 13
... bodies , and with the help of the short , slightly reflexed bristles , with which their bodies are armed , they hold so fast that they can seldom be dragged out of the ground without being torn into pieces . During the day they remain ...
... bodies , and with the help of the short , slightly reflexed bristles , with which their bodies are armed , they hold so fast that they can seldom be dragged out of the ground without being torn into pieces . During the day they remain ...
Pagina 16
... bodies from coming into close contact with the cold damp earth . It is said that they completely close their burrows during the winter . Structure . - A few remarks must be made on this subject . The body of a large worm consists of ...
... bodies from coming into close contact with the cold damp earth . It is said that they completely close their burrows during the winter . Structure . - A few remarks must be made on this subject . The body of a large worm consists of ...
Pagina 21
... bodies from the ground , as if their attention was aroused or as if surprise was felt ; or they moved their bodies from side to side as if feeling for some object . They appeared distressed by the light ; but I doubt whether this was ...
... bodies from the ground , as if their attention was aroused or as if surprise was felt ; or they moved their bodies from side to side as if feeling for some object . They appeared distressed by the light ; but I doubt whether this was ...
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.