The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 14
... length on a walk in Hyde Park , four paces in width . He counted no less than 45 dead worms in one place in a length of sixteen paces . From the facts above given , it is not probable that these worms could have been drowned , and if ...
... length on a walk in Hyde Park , four paces in width . He counted no less than 45 dead worms in one place in a length of sixteen paces . From the facts above given , it is not probable that these worms could have been drowned , and if ...
Pagina 69
... length , sometimes chiefly at the base , sometimes towards the apex . Out of 28 fallen leaves on one bed of peat in my garden , no less than 23 were narrower in the basal quarter than in the terminal quarter of their length ; and this ...
... length , sometimes chiefly at the base , sometimes towards the apex . Out of 28 fallen leaves on one bed of peat in my garden , no less than 23 were narrower in the basal quarter than in the terminal quarter of their length ; and this ...
Pagina 71
... length in the two first and short in the last named species , and are united to a common base ; and it is by this part that they are almost invariably drawn into the burrows . I have seen only two or at most three exceptions to this ...
... length in the two first and short in the last named species , and are united to a common base ; and it is by this part that they are almost invariably drawn into the burrows . I have seen only two or at most three exceptions to this ...
Pagina 72
... length of about one inch , and fifty - seven of them thus treated were drawn into the burrows by their bases , and not one by the cut - off ends . The worms in confinement often seized the needles near the middle and drew them to- wards ...
... length of about one inch , and fifty - seven of them thus treated were drawn into the burrows by their bases , and not one by the cut - off ends . The worms in confinement often seized the needles near the middle and drew them to- wards ...
Pagina 78
... length , are rigid and of nearly uniform thickness , except close to the base where they thicken rather abruptly , being here about twice as thick as in any other part . The apex is somewhat pointed , but soon withers and is then easily ...
... length , are rigid and of nearly uniform thickness , except close to the base where they thicken rather abruptly , being here about twice as thick as in any other part . The apex is somewhat pointed , but soon withers and is then easily ...
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.