The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina 50
... collected on such a site , the calciferous glands contained as many free calciferous cells , and fully as many and large concretions , as did the glands of worms which lived where there was little or no lime ; and this indicates that ...
... collected on such a site , the calciferous glands contained as many free calciferous cells , and fully as many and large concretions , as did the glands of worms which lived where there was little or no lime ; and this indicates that ...
Pagina 59
... collected over the mouth of a burrow than can be used , so that a small pile of unused leaves is left like a roof over those which have been partly dragged in . A leaf in being dragged a little way into a cylindrical burrow is ...
... collected over the mouth of a burrow than can be used , so that a small pile of unused leaves is left like a roof over those which have been partly dragged in . A leaf in being dragged a little way into a cylindrical burrow is ...
Pagina 73
... collected many more leaves over the mouths of their burrows ( as in the case formerly mentioned of lime - leaves ) than could enter them . On other occasions , how- ever , they behaved very differently ; for as soon as they touched the ...
... collected many more leaves over the mouths of their burrows ( as in the case formerly mentioned of lime - leaves ) than could enter them . On other occasions , how- ever , they behaved very differently ; for as soon as they touched the ...
Pagina 80
... more effectually . Thus , out of 37 petioles inserted by their tips , 5 had been previously drawn in by the base , for this part had been gnawed . Again , I collected a handful of petioles lying loose on the 80 СНАР . ІІ . HABITS OF WORMS .
... more effectually . Thus , out of 37 petioles inserted by their tips , 5 had been previously drawn in by the base , for this part had been gnawed . Again , I collected a handful of petioles lying loose on the 80 СНАР . ІІ . HABITS OF WORMS .
Pagina 81
Charles Darwin. I collected a handful of petioles lying loose on the ground close to some plugged - up bur- rows , where the surface was thickly strewed with other petioles which apparently had never been touched by worms ; and 14 out of ...
Charles Darwin. I collected a handful of petioles lying loose on the ground close to some plugged - up bur- rows , where the surface was thickly strewed with other petioles which apparently had never been touched by worms ; and 14 out of ...
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...