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
... whole surface of the land in every moderately humid country , is the subject of the 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 ...
... whole surface of the land in every moderately humid country , is the subject of the 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 ...
Pagina 2
... whole no doubt is of the highest antiquity , yet in regard to its permanence , we shall here- after see reason to believe that its component particles are in most cases removed at not a very slow rate , and are replaced by others due to ...
... whole no doubt is of the highest antiquity , yet in regard to its permanence , we shall here- after see reason to believe that its component particles are in most cases removed at not a very slow rate , and are replaced by others due to ...
Pagina 4
... whole coun- try has passed many times through , and will again pass many times through , the intestinal canals of worms . Hence the term " animal mould " would be in some respects more appropriate than that commonly used of " vegetable ...
... whole coun- try has passed many times through , and will again pass many times through , the intestinal canals of worms . Hence the term " animal mould " would be in some respects more appropriate than that commonly used of " vegetable ...
Pagina 5
... whole surface will be found strewed with castings . Dr. King , the superintendent of the Botanic Garden in Calcutta , to whose kindness I am indebted for many observations on earth- worms , informs me that he found , near Nancy in ...
... whole surface will be found strewed with castings . Dr. King , the superintendent of the Botanic Garden in Calcutta , to whose kindness I am indebted for many observations on earth- worms , informs me that he found , near Nancy in ...
Pagina 9
... whole surface , where the soil is poor and the grass short and thin . But they are almost or quite as numerous in some of the London parks , where the grass grows well and the soil appears rich . Even on the same field worms are much ...
... whole surface , where the soil is poor and the grass short and thin . But they are almost or quite as numerous in some of the London parks , where the grass grows well and the soil appears rich . Even on the same field worms are much ...
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...