The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina 11
... 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 СНАР . І. 11 SITES INHABITED .
... 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 СНАР . І. 11 SITES INHABITED .
Pagina 14
... heavy 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 ...
... heavy 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 ...
Pagina 62
... heavy 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 ...
... heavy 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 ...
Pagina 122
... . He sent me some collected after heavy rain , and they consisted of little pellets , about 15 inch in diameter ; and the blackened sandy earth of which they were formed still cohered with 122 CHAP . II HABITS OF WORMS .
... . He sent me some collected after heavy rain , and they consisted of little pellets , about 15 inch in diameter ; and the blackened sandy earth of which they were formed still cohered with 122 CHAP . II HABITS OF WORMS .
Pagina 147
... heavy stones , can work down , and at the same rate , through the matted roots of a grass - covered surface , is a question which has probably never occurred to them.f * Trans . of the New Zealand Institute , ' vol . xii . , 1880 , p ...
... heavy stones , can work down , and at the same rate , through the matted roots of a grass - covered surface , is a question which has probably never occurred to them.f * Trans . of the New Zealand Institute , ' vol . xii . , 1880 , p ...
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...