The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 13
... greater part of their bodies for an hour or two in the early morning . Sick * I shall have occasion often to refer to M. Perrier's admirable memoir , Organisation des Lombriciens terrestres ' in ' Archives de Zoolcg . expér . ' tom ...
... greater part of their bodies for an hour or two in the early morning . Sick * I shall have occasion often to refer to M. Perrier's admirable memoir , Organisation des Lombriciens terrestres ' in ' Archives de Zoolcg . expér . ' tom ...
Pagina 48
... greater number are rounded with an irregu- lar mulberry - like surface . Calciferous cells . adhered to many parts of these mulberry - like masses , and their gradual disappearance could be traced while they still remained attached . It ...
... greater number are rounded with an irregu- lar mulberry - like surface . Calciferous cells . adhered to many parts of these mulberry - like masses , and their gradual disappearance could be traced while they still remained attached . It ...
Pagina 61
... greater strength in some- times displacing stones in a well - trodden gravel - walk ; that they do so , may be inferred from the cavities left by the displaced stones being exactly filled by those lying over the mouths of adjoining ...
... greater strength in some- times displacing stones in a well - trodden gravel - walk ; that they do so , may be inferred from the cavities left by the displaced stones being exactly filled by those lying over the mouths of adjoining ...
Pagina 105
... greater depth than 6 or 8 inches . On what could these worms have subsisted during this whole time , if not on matter contained in the black earth ? On the other hand , whenever a large number of leaves are drawn into the burrows , the ...
... greater depth than 6 or 8 inches . On what could these worms have subsisted during this whole time , if not on matter contained in the black earth ? On the other hand , whenever a large number of leaves are drawn into the burrows , the ...
Pagina 120
... greater in the deeper parts ( supposing the whole to be equally moistened ) from the greater weight of the superincumbent soil which has to be raised , than in the parts near the sur- face . When the ground dries , the walls will shrink ...
... greater in the deeper parts ( supposing the whole to be equally moistened ) from the greater weight of the superincumbent soil which has to be raised , than in the parts near the sur- face . When the ground dries , the walls will shrink ...
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.