The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 11
... probably long retains some moisture , is in all cases , as I believe , necessary for their existence ; and the mere compression of the soil appears to be in some degree favourable to them , for they often abound in old gravel walks ...
... probably long retains some moisture , is in all cases , as I believe , necessary for their existence ; and the mere compression of the soil appears to be in some degree favourable to them , for they often abound in old gravel walks ...
Pagina 15
... probably occurs during the two remaining months of the year when they are wet . On these occasions , very few dead worms could anywhere be seen .. On January 31 , 1881 , after a long - continued and unusually severe frost with much snow ...
... probably occurs during the two remaining months of the year when they are wet . On these occasions , very few dead worms could anywhere be seen .. On January 31 , 1881 , after a long - continued and unusually severe frost with much snow ...
Pagina 29
... probably due to the irritation of their skins . The perception of such unnatural odours would be of no service to worms ; and as such timid creatures would almost certainly exhibit some signs of any СНАР . І. 29 THEIR SENSES .
... probably due to the irritation of their skins . The perception of such unnatural odours would be of no service to worms ; and as such timid creatures would almost certainly exhibit some signs of any СНАР . І. 29 THEIR SENSES .
Pagina 43
... probably from habit . The result is that they are partially digested before they are taken into the alimentary canal . I am not aware of any other case of extra - stomachal digestion having been re- corded . The boa - constrictor bathes ...
... probably from habit . The result is that they are partially digested before they are taken into the alimentary canal . I am not aware of any other case of extra - stomachal digestion having been re- corded . The boa - constrictor bathes ...
Pagina 52
... probably resulted from the humus acids being , as is known to be the case , easily decomposed . Five fresh castings from worms which lived in mould close over the chalk , were of a whitish colour and abounded with calcareous matter ...
... probably resulted from the humus acids being , as is known to be the case , easily decomposed . Five fresh castings from worms which lived in mould close over the chalk , were of a whitish colour and abounded with calcareous matter ...
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.