The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 17
... lower part there are three pairs of large glands , which secrete a surprising amount of carbonate of lime . These calciferous glands are highly remark- able , for nothing like them is known in any other animal . Their use will be ...
... lower part there are three pairs of large glands , which secrete a surprising amount of carbonate of lime . These calciferous glands are highly remark- able , for nothing like them is known in any other animal . Their use will be ...
Pagina 56
... lower lip ; the thick and strong pharynx being at the same time , as Perrier remarks , pushed forward within their bodies , so as to afford a point of resistance for the upper lip . In the case of broad flat objects they acted in a ...
... lower lip ; the thick and strong pharynx being at the same time , as Perrier remarks , pushed forward within their bodies , so as to afford a point of resistance for the upper lip . In the case of broad flat objects they acted in a ...
Pagina 98
... lower animals to justify our natural dis- trust of such a conclusion . With respect to the small size of the cerebral ganglia , we should remember what a mass of inherited knowledge , with some power of adapting means to an end , is ...
... lower animals to justify our natural dis- trust of such a conclusion . With respect to the small size of the cerebral ganglia , we should remember what a mass of inherited knowledge , with some power of adapting means to an end , is ...
Pagina 138
... lower parts , and thus forms a roof , which sooner or later falls in , as in the above mentioned five cases . The downward movement of the clay may be com- pared with that of a glacier , but is incomparably slower ; and this movement ...
... lower parts , and thus forms a roof , which sooner or later falls in , as in the above mentioned five cases . The downward movement of the clay may be com- pared with that of a glacier , but is incomparably slower ; and this movement ...
Pagina 148
... lower side ; for , as Hensen re- marks , they like the shelter of stones . As soon as the hollows are filled up , the worms eject the earth which they have swallowed beyond the circumference of the stones ; and thus the surface of the ...
... lower side ; for , as Hensen re- marks , they like the shelter of stones . As soon as the hollows are filled up , the worms eject the earth which they have swallowed beyond the circumference of the stones ; and thus the surface of the ...
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 - 1897 |
The Formation of Vegetable Mould, Through the Action of Worms, with ... Charles Darwin Vizualizare completă - 1890 |
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.