The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... Depth to which worms burrow , and the construction of their burrows - Burrows lined with castings , and in the upper part with leaves -- The lowest part paved with little stones or seeds- Manner in which the castings are ejected - The ...
... Depth to which worms burrow , and the construction of their burrows - Burrows lined with castings , and in the upper part with leaves -- The lowest part paved with little stones or seeds- Manner in which the castings are ejected - The ...
Pagina 7
... Depth of the foundations of some of the buildings - Conclusion 176-229 CHAPTER V. THE ACTION OF WORMS IN THE DENUDATION OF THE LAND . Evidence of the amount of denudation which the land has undergone - Subaerial denudation - The deposi ...
... Depth of the foundations of some of the buildings - Conclusion 176-229 CHAPTER V. THE ACTION OF WORMS IN THE DENUDATION OF THE LAND . Evidence of the amount of denudation which the land has undergone - Subaerial denudation - The deposi ...
Pagina 7
... 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 of Maer Hall in Staffordshire , to the large quantity of fine earth ...
... 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 of Maer Hall in Staffordshire , to the large quantity of fine earth ...
Pagina 13
... depth and cease to work , as they do during the winter when the ground is frozen . Worms are nocturnal in their habits , and at night may be seen crawling about in large numbers , but usually with their tails still inserted in their ...
... depth and cease to work , as they do during the winter when the ground is frozen . Worms are nocturnal in their habits , and at night may be seen crawling about in large numbers , but usually with their tails still inserted in their ...
Pagina 38
... depth of from one to three inches , and are then moistened with a secreted fluid . It has been assumed that this fluid serves to hasten their decay : but a large number of leaves were twice pulled out of the burrows of worms and kept ...
... depth of from one to three inches , and are then moistened with a secreted fluid . It has been assumed that this fluid serves to hasten their decay : but a large number of leaves were twice pulled out of the burrows of worms and kept ...
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.