The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina 49
... cent . of lime . Worms therefore would be liable to become charged with this earth , unless there were some special means for its excretion ; and the calciferous glands are well adapted for this purpose . The worms which live in mould ...
... cent . of lime . Worms therefore would be liable to become charged with this earth , unless there were some special means for its excretion ; and the calciferous glands are well adapted for this purpose . The worms which live in mould ...
Pagina 65
... cent . ( always using the nearest whole number ) had been drawn in by the tip , 9 per cent . by the base or footstalk , and 11 per cent . transversely or СНАР . ІІ . 65 THEIR INTELLIGENCE .
... cent . ( always using the nearest whole number ) had been drawn in by the tip , 9 per cent . by the base or footstalk , and 11 per cent . transversely or СНАР . ІІ . 65 THEIR INTELLIGENCE .
Pagina 66
... cent , by or near the base ; and 17 per cent . trans- versely or by the middle . These proportions agree very closely , as far as the tip is con- cerned , with those before given . But the per- centage drawn in by the base is smaller ...
... cent , by or near the base ; and 17 per cent . trans- versely or by the middle . These proportions agree very closely , as far as the tip is con- cerned , with those before given . But the per- centage drawn in by the base is smaller ...
Pagina 67
... cent . by their tips ; for it is clear that they would not have failed in drawing them in by the base or middle . The leaves of a foreign plant were next searched for , the blades of which were not more pointed towards the apex than ...
... cent . by their tips ; for it is clear that they would not have failed in drawing them in by the base or middle . The leaves of a foreign plant were next searched for , the blades of which were not more pointed towards the apex than ...
Pagina 68
... cent . had been drawn in by the tip ; 27 per cent . by the base , and 10 per cent . transversely . We here see that a far larger proportion , viz . , 27 per cent . were drawn in by the base than in the case of lime leaves , the blades ...
... cent . had been drawn in by the tip ; 27 per cent . by the base , and 10 per cent . transversely . We here see that a far larger proportion , viz . , 27 per cent . were drawn in by the base than in the case of lime leaves , the blades ...
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...