The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... turf , but still forming a 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 ...
... turf , but still forming a 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 ...
Pagina 62
... turf - edgings to gravel - walks , into which water could hardly flow , as well plugged as burrows on a level surface . Can the plugs or piles of stones aid in concealing the bur- rows from scolopenders , which , according to ...
... turf - edgings to gravel - walks , into which water could hardly flow , as well plugged as burrows on a level surface . Can the plugs or piles of stones aid in concealing the bur- rows from scolopenders , which , according to ...
Pagina 104
... burrows ; for instance the turf along a hedge- row , about 200 yards in length , was daily observed in the autumn during several weeks , and every morning many fresh castings were seen ; but 104 CHAP . II . HABITS OF WORMS .
... burrows ; for instance the turf along a hedge- row , about 200 yards in length , was daily observed in the autumn during several weeks , and every morning many fresh castings were seen ; but 104 CHAP . II . HABITS OF WORMS .
Pagina 111
... passed through a layer of sifted coal - cinders , spread over turf to a thickness of 11⁄2 inch , had been thus lined to an unusual thickness . In this case the worms , judging 6 CHAP . II . CONSTRUCTION OF THEIR BURROWS . 111.
... passed through a layer of sifted coal - cinders , spread over turf to a thickness of 11⁄2 inch , had been thus lined to an unusual thickness . In this case the worms , judging 6 CHAP . II . CONSTRUCTION OF THEIR BURROWS . 111.
Pagina 130
... turf , formed by the matted roots of the grasses , inch in thickness , beneath which , at a depth of 2 inches ( or 3 inches from the surface ) , a layer of the lime in powder or in small lumps could be distinctly seen running all round ...
... turf , formed by the matted roots of the grasses , inch in thickness , beneath which , at a depth of 2 inches ( or 3 inches from the surface ) , a layer of the lime in powder or in small lumps could be distinctly seen running all round ...
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.