The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... SURFACE . Rate at which various objects strewed on the surface of grass - fields are covered up by the castings of worms -The burial of a paved path - The slow subsidence of great stones left on the surface - The number of worms which ...
... SURFACE . Rate at which various objects strewed on the surface of grass - fields are covered up by the castings of worms -The burial of a paved path - The slow subsidence of great stones left on the surface - The number of worms which ...
Pagina 7
... surface of several meadows , were found after a few years lying at the depth of some inches beneath the turf , but still forming a layer . This apparent sinking of superficial bodies is due , as was first suggested to me by Mr. Wedgwood ...
... surface of several meadows , were found after a few years lying at the depth of some inches beneath the turf , but still forming a layer . This apparent sinking of superficial bodies is due , as was first suggested to me by Mr. Wedgwood ...
Pagina 7
... surface . I was thus led to conclude that all the vegetable mould over the 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 ...
... surface . I was thus led to conclude that all the vegetable mould over the 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 ...
Pagina 9
... surface in the form of cast- ings . Hoffmeister says that the species in Germany are not well known , but gives the same number as Eisen , together with some strongly marked varieties . † Earth - worms abound in England in many ...
... surface in the form of cast- ings . Hoffmeister says that the species in Germany are not well known , but gives the same number as Eisen , together with some strongly marked varieties . † Earth - worms abound in England in many ...
Pagina 14
... surface . After heavy rain succeeding dry weather , an astonishing num- ber of dead worms may sometimes be seen lying on the ground . Mr. Galton informs me that on one such occasion ( March , 1881 ) , the dead worms averaged one for ...
... surface . After heavy rain succeeding dry weather , an astonishing num- ber of dead worms may sometimes be seen lying on the ground . Mr. Galton informs me that on one such occasion ( March , 1881 ) , the dead worms averaged one for ...
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.