The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 10
... extremely rare , or quite absent in the drier , brown , fibrous peat , which is so much valued by gardeners . On dry , sandy or gravelly tracks , where heath with some gorse , ferns , coarse grass , moss and lichens alone grow , hardly ...
... extremely rare , or quite absent in the drier , brown , fibrous peat , which is so much valued by gardeners . On dry , sandy or gravelly tracks , where heath with some gorse , ferns , coarse grass , moss and lichens alone grow , hardly ...
Pagina 19
... extremely timid animals . Other * Histolog . Untersuchungen über die Regenwürmer . " Zeit- schrift für wissenschaft . Zoologie , ' B. xix . , 1869 , p . 611 . persons have found no difficulty in observing worms at night CHAP . I. 19 ...
... extremely timid animals . Other * Histolog . Untersuchungen über die Regenwürmer . " Zeit- schrift für wissenschaft . Zoologie , ' B. xix . , 1869 , p . 611 . persons have found no difficulty in observing worms at night CHAP . I. 19 ...
Pagina 20
... extremely sensitive to light ; but he admits that in most cases a certain time is requisite for its action . These statements led me to watch on many successive nights worms kept in pots , which were protected from currents of air by ...
... extremely sensitive to light ; but he admits that in most cases a certain time is requisite for its action . These statements led me to watch on many successive nights worms kept in pots , which were protected from currents of air by ...
Pagina 22
... extremely feeble , made a great difference in the result ; for worms left exposed before a paraffin lamp or a candle invariably retreated into their burrows within from five to fifteen minutes ; and if in the evening the pots were ...
... extremely feeble , made a great difference in the result ; for worms left exposed before a paraffin lamp or a candle invariably retreated into their burrows within from five to fifteen minutes ; and if in the evening the pots were ...
Pagina 26
... was played as loudly as possible , they remained perfectly quiet . Although they are indifferent to undula- tions in the air audible by us , they are extremely sensitive to vibrations in any solid object . When 26 CHAP . I HABITS OF WORMS .
... was played as loudly as possible , they remained perfectly quiet . Although they are indifferent to undula- tions in the air audible by us , they are extremely sensitive to vibrations in any solid object . When 26 CHAP . I HABITS OF WORMS .
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 fragmente - 1989 |
The Formation of Vegetable Mould, Through the Action of Worms, with ... Charles Darwin Nu există previzualizare disponibilă - 2016 |
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.