The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 15
... square . They could sometimes be traced either to or from the mouths of the burrows in the gravel - walks , for distances between 2 or 3 up to 15 yards . I have never seen two tracks leading to the same burrow ; nor is it likely , from ...
... square . They could sometimes be traced either to or from the mouths of the burrows in the gravel - walks , for distances between 2 or 3 up to 15 yards . I have never seen two tracks leading to the same burrow ; nor is it likely , from ...
Pagina 30
... square pieces of fresh and half - decayed cabbage - leaves and of onion bulbs were on nine occasions buried in my pots , beneath about of an inch of common garden soil ; and they were always discovered by the worms . One bit of cabbage ...
... square pieces of fresh and half - decayed cabbage - leaves and of onion bulbs were on nine occasions buried in my pots , beneath about of an inch of common garden soil ; and they were always discovered by the worms . One bit of cabbage ...
Pagina 106
... square foot . They consist of fine , pale - coloured earth , containing calcareous matter , which after having passed through the bodies of worms and being dried , coheres with considerable force . I have reason to believe that these ...
... square foot . They consist of fine , pale - coloured earth , containing calcareous matter , which after having passed through the bodies of worms and being dried , coheres with considerable force . I have reason to believe that these ...
Pagina 121
... having an area of 200 square yards . They varied in bulk from half a cubic centimeter to five cubic centimeters , and were on an average three cubic centimeters . They were , therefore of small CHAP . 11. THEIR WIDE DISTRIBUTION . 121.
... having an area of 200 square yards . They varied in bulk from half a cubic centimeter to five cubic centimeters , and were on an average three cubic centimeters . They were , therefore of small CHAP . 11. THEIR WIDE DISTRIBUTION . 121.
Pagina 130
... square holes were dug in this field in the beginning of October 1837 ; and the sections showed a layer of turf , formed by the matted roots of the grasses , inch in thickness , beneath which , at a depth of 2 inches ( or 3 inches from ...
... square holes were dug in this field in the beginning of October 1837 ; and the sections showed a layer of turf , formed by the matted roots of the grasses , inch in thickness , beneath which , at a depth of 2 inches ( or 3 inches from ...
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.