The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina
... castings of worms -The burial of a paved path - The slow subsidence of great stones left on the surface - The number of worms which live within a given space - The weight of earth ejected from a burrow , and from iv CONTENTS .
... castings of worms -The burial of a paved path - The slow subsidence of great stones left on the surface - The number of worms which live within a given space - The weight of earth ejected from a burrow , and from iv CONTENTS .
Pagina
... 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 PLAYED IN THE BURIAL OF ANCIENT ...
... 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 PLAYED IN THE BURIAL OF ANCIENT ...
Pagina
... castings of worms -The burial of a paved path - The slow subsidence of great stones left on the surface - The number of worms which live within a given space - The weight of earth ejected from a burrow , az 3 iv CONTENTS .
... castings of worms -The burial of a paved path - The slow subsidence of great stones left on the surface - The number of worms which live within a given space - The weight of earth ejected from a burrow , az 3 iv CONTENTS .
Pagina
... given space - The thub of the 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 ...
... given space - The thub of the 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 ...
Pagina 6
... given time in a measured space , instead of ascertaining the rate at which objects left on the surface were buried by worms . But some of my observa- tions have been rendered almost superfluous by an admirable paper by Von Hensen ...
... given time in a measured space , instead of ascertaining the rate at which objects left on the surface were buried by worms . But some of my observa- tions have been rendered almost superfluous by an admirable paper by Von Hensen ...
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...