The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina
... manner of plugging up their burrows -Various kinds of leaves and other objects thus used - Triangles of paper - Summary of reasons for believing that worms exhibit some intelligence- Means by which they excavate their burrows , by ...
... manner of plugging up their burrows -Various kinds of leaves and other objects thus used - Triangles of paper - Summary of reasons for believing that worms exhibit some intelligence- Means by which they excavate their burrows , by ...
Pagina
... the anterior pair of glands - The calcareous matter primarily an excre- tion , but secondarily serves to neutralise the acids generated during the digestive process 8-54 CHAPTER II . HABITS OF WORMS - continued . Manner.
... the anterior pair of glands - The calcareous matter primarily an excre- tion , but secondarily serves to neutralise the acids generated during the digestive process 8-54 CHAPTER II . HABITS OF WORMS - continued . Manner.
Pagina
... manner of plugging up their burrows -Various kinds of leaves and other objects thus used - Triangles of paper - Summary of reasons for believing that worms exhibit some intelligence— Means by which they excavate their burrows , by ...
... manner of plugging up their burrows -Various kinds of leaves and other objects thus used - Triangles of paper - Summary of reasons for believing that worms exhibit some intelligence— Means by which they excavate their burrows , by ...
Pagina 16
... manner for the sake of breathing fresh air , for we have seen that they can live for a long time under water . I believe that they lie near the surface for the sake of warmth , es- pecially in the morning ; and we shall here- after find ...
... manner for the sake of breathing fresh air , for we have seen that they can live for a long time under water . I believe that they lie near the surface for the sake of warmth , es- pecially in the morning ; and we shall here- after find ...
Pagina 22
... manner excites their cerebral ganglia . It appeared at first probable that the dif ferent manner in which they were affected on different occasions might be explained , either by the degree 22 CHAP . I HABITS OF WORMS .
... manner excites their cerebral ganglia . It appeared at first probable that the dif ferent manner in which they were affected on different occasions might be explained , either by the degree 22 CHAP . I HABITS OF WORMS .
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...