The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... ancient encampments and tumuli— The preservation of the crowns and furrows on land anciently ploughed - The formation and amount of mould over the Chalk formation 259-304 CHAPTER VII . CONCLUSION . Summary of the part which vi CONTENTS .
... ancient encampments and tumuli— The preservation of the crowns and furrows on land anciently ploughed - The formation and amount of mould over the Chalk formation 259-304 CHAPTER VII . CONCLUSION . Summary of the part which vi CONTENTS .
Pagina 7
... of which it is com- posed is one of its chief characteristic features ; and this may be well observed in any gravelly country , where a recently - ploughed field 66 immediately adjoins one which has long re- mained undisturbed.
... of which it is com- posed is one of its chief characteristic features ; and this may be well observed in any gravelly country , where a recently - ploughed field 66 immediately adjoins one which has long re- mained undisturbed.
Pagina 130
... ploughed . Some square holes were dug in this field in the beginning of October 1837 ; and the sections showed a layer of turf , formed by the matted roots of the grasses , inch in thickness , beneath which , at a depth of 2 inches ( or ...
... ploughed . Some square holes were dug in this field in the beginning of October 1837 ; and the sections showed a layer of turf , formed by the matted roots of the grasses , inch in thickness , beneath which , at a depth of 2 inches ( or ...
Pagina 132
... ploughed , harrowed and thickly covered in the year 1822 with burnt marl and cinders . It was sowed with grass seeds , and now supports a tolerably good but coarse pasture . Holes were dug in this field in 1837 , or 15 years after its ...
... ploughed , harrowed and thickly covered in the year 1822 with burnt marl and cinders . It was sowed with grass seeds , and now supports a tolerably good but coarse pasture . Holes were dug in this field in 1837 , or 15 years after its ...
Pagina 135
... ploughed . A friend had three trenches dug in this field 28 years after the application of the marl , * This case is given in a postscript to my paper in the ' Transact . Geolog . Soc . ' ( Vol . v . p . 505 ) , and contains a serious ...
... ploughed . A friend had three trenches dug in this field 28 years after the application of the marl , * This case is given in a postscript to my paper in the ' Transact . Geolog . Soc . ' ( Vol . v . p . 505 ) , and contains a serious ...
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.