The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... covered up by the 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 ...
... covered up by the 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 ...
Pagina 7
... covered - The penetration of the tesselated floors and walls by worms - Subsidence of the floors- Thickness of the mould - The old Roman city of Wroxeter - Thickness of the mould - Depth of the foundations of some of the buildings ...
... covered - The penetration of the tesselated floors and walls by worms - Subsidence of the floors- Thickness of the mould - The old Roman city of Wroxeter - Thickness of the mould - Depth of the foundations of some of the buildings ...
Pagina 7
... covered surfaces - The amount of earth which annually flows downwards - The effect of tropical rain on worm castings - The finest particles of earth washed completely away from castings - The disintegration of dried castings into ...
... covered surfaces - The amount of earth which annually flows downwards - The effect of tropical rain on worm castings - The finest particles of earth washed completely away from castings - The disintegration of dried castings into ...
Pagina 7
... covered with castings as on commons , at a height of several hundred feet above the sea . In woods again , if the loose leaves in autumr . are removed , the whole surface will be found strewed with castings . Dr. King , the ...
... covered with castings as on commons , at a height of several hundred feet above the sea . In woods again , if the loose leaves in autumr . are removed , the whole surface will be found strewed with castings . Dr. King , the ...
Pagina 10
... covered with a fine short sward . Whether this change of vegetation is due to the taller plants being killed by the occasional trampling of man and animals , or to the soil being occasionally manured by the droppings from animals , I do ...
... covered with a fine short sward . Whether this change of vegetation is due to the taller plants being killed by the occasional trampling of man and animals , or to the soil being occasionally manured by the droppings from animals , I do ...
Alte ediții - Afișează-le pe toate
The Formation of Vegetable Mould: Through the Action of Worms, with ... Charles Darwin Vizualizare completă - 1896 |
The Formation of Vegetable Mould, Through the Action of Worms, with ... Charles Darwin Vizualizare completă - 1898 |
The formation of vegetable mould, through the action of worms, with Charles Darwin Vizualizare completă - 1897 |
Termeni și expresii frecvente
accumulated acetic acid acid action of worms alimentary canal amount angle animals apex appear basal base Beaulieu Abbey beneath the surface blown bodies brought buried burrows calciferous carbonic acid cells cent chalk Cloth concrete covered depth disintegration doubt dragged drawn earth feet field flints floor formed fragments gizzards glands grass ground heavy rain Hensen holes Illustrations inches beneath inches deep inches in thickness inches thick intestines JOSEPH LE CONTE Knole Park lamellæ land large number larvæ layer leaf leaves ledges Leith Hill Place lime Maer Hall manner matter mortar mouths nearly objects observed particles pasture pavement penetrated Perrier petioles pharynx 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 upper vegetable mould walls washed weather weight whilst worm-castings worms
Pasaje populare
Pagina 1 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
Pagina 2 - XVIII. THE NATURE OF LIGHT. With a General Account of Physical Optics.
Pagina 2 - XXIII. Studies in Spectrum Analysis. By J. Norman Lockyer, FRS With six photographic Illustrations of Spectra, and numerous engravings on Wood.