The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina
... layer of mould which the castings on a given space would form within a given time if uniformly spread out - The slow rate at which mould can increase to a great thickness - Conclusion CHAPTER IV . Page 129-175 THE PART WHICH WORMS HAVE ...
... layer of mould which the castings on a given space would form within a given time if uniformly spread out - The slow rate at which mould can increase to a great thickness - Conclusion CHAPTER IV . Page 129-175 THE PART WHICH WORMS HAVE ...
Pagina
... layer of mould which the castings a space would form within a given time if f spread out — The slow rate at which would ca increase to a great th ckness - Conclusi n CHAPTER IV . Page 120-170 THE PART WHICH WORMS HAVE PLAYE " IS TE ...
... layer of mould which the castings a space would form within a given time if f spread out — The slow rate at which would ca increase to a great th ckness - Conclusi n CHAPTER IV . Page 120-170 THE PART WHICH WORMS HAVE PLAYE " IS TE ...
Pagina 1
... layer of vegetable mould , which covers the whole surface of the land in every moderately humid country , is the subject of the present volume . This mould is generally of a blackish colour and a few inches in thickness . In different ...
... layer of vegetable mould , which covers the whole surface of the land in every moderately humid country , is the subject of the present volume . This mould is generally of a blackish colour and a few inches in thickness . In different ...
Pagina 2
... layer of vegetable mould as a whole no doubt is of the highest antiquity , yet in regard to its permanence , we shall here- after see reason to believe that its component particles are in most cases removed at not a very slow rate , and ...
... layer of vegetable mould as a whole no doubt is of the highest antiquity , yet in regard to its permanence , we shall here- after see reason to believe that its component particles are in most cases removed at not a very slow rate , and ...
Pagina 3
... layer . This apparent sinking of superficial bodies is due , as was first suggested to me by Mr. Wedgwood of Maer Hall in Staffordshire , to the large quantity of fine earth continually brought up to the surface by worms in the form of ...
... layer . This apparent sinking of superficial bodies is due , as was first suggested to me by Mr. Wedgwood of Maer Hall in Staffordshire , to the large quantity of fine earth continually brought up to the surface by worms in the form 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...