Darwin on Humus and the Earthworm: The Formation of Vegetable Mould Through the Action of Worms with Observations on Their HabitsFaber & Faber, 1966 - 153 pagini |
Cuprins
INTRODUCTION BY SIR ALBERT HOWARD page | 9 |
AUTHORS INTRODUCTION TO THE FIRST EDITION | 19 |
Chapter II | 41 |
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The Formation of vegetable mould, through the action of worms, with ... Charles Darwin Vizualizare completă - 1895 |
Termeni și expresii frecvente
24 inches accumulated acetic acid acid acre action of worms alimentary canal amount angle animals apex appeared basal base Beaulieu Abbey beneath the surface brick buried burrows calciferous CALIFORN castings ejected cent chalk cinders concrete covered denudation depth diameter DIEGO UNIVERSITY disintegration dragged drawn earth earthworms ERSITY feet field flints floor formed fragments garden gizzards glands grass ground heavy rain holes humus inches beneath inches deep inches in thickness inclined surface intestines Knole Park lamellæ land large number layer leaves ledges Leith Hill Place length LIBRARY lime Maer Hall manner manure matter mortar mouths nearly objects observed overlying particles pasture pavement petioles pharynx places ploughed plugging pots probably Roman villa rubbish SAN DIEGO sand seen seized side Silchester slope soil square yard Stonehenge stones subsided swallowed tesselated tiles tips trench triangles triturated turf upper vegetable mould walls washed weight whilst worm-castings