The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina 1
... present volume . This mould is generally of a blackish colour and a few inches in thickness . In different districts it differs but little in appearance , although it may rest on various subsoils . The uniform fineness of the particles ...
... present volume . This mould is generally of a blackish colour and a few inches in thickness . In different districts it differs but little in appearance , although it may rest on various subsoils . The uniform fineness of the particles ...
Pagina 53
... present ; and the activity of an alkaline juice is arrested by 66 66 acidification , and hindered by neutraliza- " tion . " Therefore it seems highly probable that the innumerable calciferous cells , which are poured from the four ...
... present ; and the activity of an alkaline juice is arrested by 66 66 acidification , and hindered by neutraliza- " tion . " Therefore it seems highly probable that the innumerable calciferous cells , which are poured from the four ...
Pagina 54
... quite subordinate importance , seeing that the object is already attained by stones being generally present in the gizzards and intestines of worms . CHAPTER II . HABITS OF WORMS - continued . Manner 54 СПАР . І. HABITS OF WORMS .
... quite subordinate importance , seeing that the object is already attained by stones being generally present in the gizzards and intestines of worms . CHAPTER II . HABITS OF WORMS - continued . Manner 54 СПАР . І. HABITS OF WORMS .
Pagina 121
... present quite unknown . They are easily killed by salt - water , and it does not appear probable that young worms or their egg - capsules could be carried in earth adhering to the feet or beaks of land - birds . Moreover Kerguelen Land ...
... present quite unknown . They are easily killed by salt - water , and it does not appear probable that young worms or their egg - capsules could be carried in earth adhering to the feet or beaks of land - birds . Moreover Kerguelen Land ...
Pagina 145
... present state of the ground beneath the old beech - trees in Knole Park , where worms appeared to be absent , was striking . A narrow path running across part of my lawn was paved in 1843 with small flag- stones , set edgeways ; but ...
... present state of the ground beneath the old beech - trees in Knole Park , where worms appeared to be absent , was striking . A narrow path running across part of my lawn was paved in 1843 with small flag- stones , set edgeways ; but ...
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...