The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina 5
... ground so thickly covered with castings as on commons , at a height of several hundred feet above the sea . In woods again , if the loose leaves in autumn are removed , the whole surface will be found strewed with castings . Dr. King ...
... ground so thickly covered with castings as on commons , at a height of several hundred feet above the sea . In woods again , if the loose leaves in autumn are removed , the whole surface will be found strewed with castings . Dr. King ...
Pagina 9
Charles Darwin. Eisen ; * but two of these rarely burrow in the ground , and one inhabits very wet places or even lives under the water . We are here concerned only with the kinds which bring up earth to the surface in the form of cast ...
Charles Darwin. Eisen ; * but two of these rarely burrow in the ground , and one inhabits very wet places or even lives under the water . We are here concerned only with the kinds which bring up earth to the surface in the form of cast ...
Pagina 11
... ground by the innu- merable roots of the trees ; for such places may be seen covered with castings after the heavy autumnal rains . Although most cop- pices and woods support many worms , yet in a forest of tall and ancient beech ...
... ground by the innu- merable roots of the trees ; for such places may be seen covered with castings after the heavy autumnal rains . Although most cop- pices and woods support many worms , yet in a forest of tall and ancient beech ...
Pagina 12
Charles Darwin. Park , where the ground beneath was bare of all vegetation , not a single casting could be found over wide spaces , even during the autumn . Nevertheless , castings were abun dant on some grass - covered glades and in ...
Charles Darwin. Park , where the ground beneath was bare of all vegetation , not a single casting could be found over wide spaces , even during the autumn . Nevertheless , castings were abun dant on some grass - covered glades and in ...
Pagina 13
... ground is dry , they penetrate to a consider able depth and cease to work , as they do during the winter when the ground is frozen . Worms are nocturnal in their habits , and at night may be seen crawling about in large numbers , but ...
... ground is dry , they penetrate to a consider able depth and cease to work , as they do during the winter when the ground is frozen . Worms are nocturnal in their habits , and at night may be seen crawling about in large numbers , but ...
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...