The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina
... 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 , in part due to the accumulation of disintegrated ...
... 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 , in part due to the accumulation of disintegrated ...
Pagina
... 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 , in part due to the accumulation of disintegrated ...
... 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 , in part due to the accumulation of disintegrated ...
Pagina 11
... washed down from the steeper parts and had accumulated to a thick- ness cf a few inches , worm - castings abounded . These spots seemed to be overstocked with worms , so that they had been compelled to spread to a distance of a few feet ...
... washed down from the steeper parts and had accumulated to a thick- ness cf a few inches , worm - castings abounded . These spots seemed to be overstocked with worms , so that they had been compelled to spread to a distance of a few feet ...
Pagina 89
... washed off . We may therefore conclude that if a triangle , before being dragged in by the apex , had been dragged into a burrow by its base with even a slight degree of force , the basal part would long retain its creases and remain ...
... washed off . We may therefore conclude that if a triangle , before being dragged in by the apex , had been dragged into a burrow by its base with even a slight degree of force , the basal part would long retain its creases and remain ...
Pagina 101
... washed , so that the coarser matter alone was left . This consisted of grains of quartz , micaceous slate , other rocks , and bricks or tiles , many of them from to inch in diameter . No one will suppose that these grains were swallowed ...
... washed , so that the coarser matter alone was left . This consisted of grains of quartz , micaceous slate , other rocks , and bricks or tiles , many of them from to inch in diameter . No one will suppose that these grains were swallowed ...
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...