The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... rain on worm castings - The finest particles of earth washed completely away from castings - The disintegration of dried castings into pellets , and their rolling down inclined surfaces --- The formation of little ledges on hill - sides ...
... rain on worm castings - The finest particles of earth washed completely away from castings - The disintegration of dried castings into pellets , and their rolling down inclined surfaces --- The formation of little ledges on hill - sides ...
Pagina 11
... castings after the heavy autumnal rains . Although most cop- pices and woods support many worms , yet in a forest of tall and ancient beech - trees in Knole Park , where the ground beneath was bare of all 2 СНАР . І. 11 SITES INHABITED .
... castings after the heavy autumnal rains . Although most cop- pices and woods support many worms , yet in a forest of tall and ancient beech - trees in Knole Park , where the ground beneath was bare of all 2 СНАР . І. 11 SITES INHABITED .
Pagina 14
... rain succeeding dry weather , an astonishing num- ber of dead worms may sometimes be seen lying on the ground . Mr. Galton informs me that on one such occasion ( March , 1881 ) , the dead worms averaged one for every two and a half ...
... rain succeeding dry weather , an astonishing num- ber of dead worms may sometimes be seen lying on the ground . Mr. Galton informs me that on one such occasion ( March , 1881 ) , the dead worms averaged one for every two and a half ...
Pagina 62
... rain ; but it may be urged against this view that a few , loose , well - rounded stones are ill- adapted to keep out water . I have moreover seen many burrows in the perpendicularly cut turf - edgings to gravel - walks , into which ...
... rain ; but it may be urged against this view that a few , loose , well - rounded stones are ill- adapted to keep out water . I have moreover seen many burrows in the perpendicularly cut turf - edgings to gravel - walks , into which ...
Pagina 83
... rain and dew . The sides of all the triangles were three inches in length , with the bases of 120 one inch , and of the other 183 half an inch in length . These latter triangles were very narrow or much acuminated . * As a check on the ...
... rain and dew . The sides of all the triangles were three inches in length , with the bases of 120 one inch , and of the other 183 half an inch in length . These latter triangles were very narrow or much acuminated . * As a check on the ...
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 - 1897 |
The Formation of Vegetable Mould, Through the Action of Worms, with ... Charles Darwin Vizualizare completă - 1890 |
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.