The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... grass - fields are covered up by the castings of worms -The burial of a paved path - The slow subsidence of great stones left on the surface - The number of worms which live within a given space - The weight of earth ejected from a ...
... grass - fields are covered up by the castings of worms -The burial of a paved path - The slow subsidence of great stones left on the surface - The number of worms which live within a given space - The weight of earth ejected from a ...
Pagina 7
... grass - covered surfaces - The amount of earth which annually flows downwards - The effect of tropical rain on worm castings - The finest particles of earth washed completely away from castings - The disintegration of dried castings ...
... grass - covered surfaces - The amount of earth which annually flows downwards - The effect of tropical rain on worm castings - The finest particles of earth washed completely away from castings - The disintegration of dried castings ...
Pagina 9
... grass short and thin . But they are almost or quite as numerous in some of the London parks , where the grass grows well and the soil appears rich . Even on the same field . worms are much more frequent in some places than in others ...
... grass short and thin . But they are almost or quite as numerous in some of the London parks , where the grass grows well and the soil appears rich . Even on the same field . worms are much more frequent in some places than in others ...
Pagina 10
... grass , moss and lichens alone grow , hardly any worms can be found . But in many parts of England , wherever a path ... grasses , for Professor Buckman , who made many observations on their growth in the experimental gardens of the ...
... grass , moss and lichens alone grow , hardly any worms can be found . But in many parts of England , wherever a path ... grasses , for Professor Buckman , who made many observations on their growth in the experimental gardens of the ...
Pagina 12
... grass - covered glades and in- dentations which penetrated this forest . On the mountains of North Wales and on the Alps , worms , as I have been informed , are in most places rare ; and this may perhaps be due to the close proximity of ...
... grass - covered glades and in- dentations which penetrated this forest . On the mountains of North Wales and on the Alps , worms , as I have been informed , are in most places rare ; and this may perhaps be due to the close proximity of ...
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.