The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina 2
... believe that its component particles are in most cases removed at not a very slow rate , and are replaced by others due to the disintegration of the underlying materials . 66 As I was led to keep in my study during many months worms in ...
... believe that its component particles are in most cases removed at not a very slow rate , and are replaced by others due to the disintegration of the underlying materials . 66 As I was led to keep in my study during many months worms in ...
Pagina 10
... believe that pressure is actually favourable to the growth of grasses , for Professor Buckman , who made many observations on their growth in the experimental gardens of the Royal Agricultural College , remarks ( ' Gardeners ' Chronicle ...
... believe that pressure is actually favourable to the growth of grasses , for Professor Buckman , who made many observations on their growth in the experimental gardens of the Royal Agricultural College , remarks ( ' Gardeners ' Chronicle ...
Pagina 11
... 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 , and in foot - paths across fields . Beneath large trees few ...
... 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 , and in foot - paths across fields . Beneath large trees few ...
Pagina 14
... believe that they were already sick , and that their deaths were merely hastened by the ground being flooded . It has often been said that under ordinary circumstances healthy worms never , or very rarely , completely leave their ...
... believe that they were already sick , and that their deaths were merely hastened by the ground being flooded . It has often been said that under ordinary circumstances healthy worms never , or very rarely , completely leave their ...
Pagina 16
... believe that they lie near the surface for the sake of warmth , es- pecially in the morning ; and we shall here- after find that they often coat the mouths of their burrows with leaves , apparently to prevent their bodies from coming ...
... believe that they lie near the surface for the sake of warmth , es- pecially in the morning ; and we shall here- after find that they often coat the mouths of their burrows with leaves , apparently to prevent their bodies from coming ...
Alte ediții - Afișează-le pe toate
Darwin on Humus and the Earthworm: The Formation of Vegetable Mould Through ... Charles Darwin Vizualizare fragmente - 1966 |
Termeni și expresii frecvente
9 inches accumulated acetic acid acid action of worms alimentary canal amount angles animals apex apical appears basal base Beaulieu Abbey beneath the surface broken buried burnt marl burrows cent chalk cinders close concrete covered depth diameter disintegration dragged drawn earth feet field flints floor formed fragments gizzards glands grass ground heavy rain Hensen holes hypocausts Illustrations inches beneath inches deep inches in length inches in thickness inches thick intestines Joyce Knole Park lamellæ land large number larvæ layer leaf leaves Leith Hill Place lime Maer Hall manner matter mortar mouths nearly northern room objects observed particles pasture pavement penetrated petioles pharynx pine-leaves 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 undisturbed upper vegetable mould walls washed weather weight whilst worm-castings worms
Pasaje populare
Pagina 322 - OUTINGS AT ODD TIMES. By CHARLES C. ABBOTT, author of " Days out of Doors " and " A Naturalist's Rambles about Home." i6mo. Cloth, gilt top, $1.25. " A charming little volume, literally alone with Nature, for it discusses seasons and the fields, birds, etc., with the loving freedom of a naturalist born. Every page reads like a sylvan poem; and for the lovers of the beautiful in quiet...