The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... in the anterior pair of glands - The calcareous matter primarily an excre- tion , but secondarily serves to neutralise the acids generated during the digestive process 8-54 CHAPTER II . HABITS OF WORMS - continued . Manner.
... in the anterior pair of glands - The calcareous matter primarily an excre- tion , but secondarily serves to neutralise the acids generated during the digestive process 8-54 CHAPTER II . HABITS OF WORMS - continued . Manner.
Pagina 7
... acids-- Similar acids apparently generated within 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 ...
... acids-- Similar acids apparently generated within 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 ...
Pagina 8
... acids generated during the digestive process . EARTH - WORMS are distributed throughout the world under the form of a few genera , which externally are closely similar to one another . The British species of Lumbricus have never been ...
... acids generated during the digestive process . EARTH - WORMS are distributed throughout the world under the form of a few genera , which externally are closely similar to one another . The British species of Lumbricus have never been ...
Pagina 29
... acid was kept in my mouth . Pellets of cotton - wool soaked in tobacco juice , and in millefleurs perfume , and in paraffin , were held with pincers and were waved about within two or three inches of several worms , but they took no ...
... acid was kept in my mouth . Pellets of cotton - wool soaked in tobacco juice , and in millefleurs perfume , and in paraffin , were held with pincers and were waved about within two or three inches of several worms , but they took no ...
Pagina 44
... acid , and when oxalate of ammonia is added to the solution a white precipitate is thrown down . We may therefore conclude that they contain carbonate of lime . If the cells * Perrier , ' Archives de Zoolog . expér ' July , 1874 , pp ...
... acid , and when oxalate of ammonia is added to the solution a white precipitate is thrown down . We may therefore conclude that they contain carbonate of lime . If the cells * Perrier , ' Archives de Zoolog . expér ' July , 1874 , pp ...
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.