The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 16
... draw out of their holes an astonishing number of worms ; and this they could not do , unless they lay close to the surface . It is not probable that worms behave in this manner for the sake of breathing fresh air , for we have seen that ...
... draw out of their holes an astonishing number of worms ; and this they could not do , unless they lay close to the surface . It is not probable that worms behave in this manner for the sake of breathing fresh air , for we have seen that ...
Pagina 37
... drawn from leaves , shortly before they fall off . It has , however , now been ascertained . that cellulose , though very little or not at all attacked by the gastric secretion of the higher animals , is acted on by that from the ...
... drawn from leaves , shortly before they fall off . It has , however , now been ascertained . that cellulose , though very little or not at all attacked by the gastric secretion of the higher animals , is acted on by that from the ...
Pagina 38
... the worms , were pounded with a few drops of distilled water , and the juice thus extracted was not alkaline . Some leaves , however , which had been drawn into burrows out of doors , at an unknown antecedent 38 CHAP . I. HABITS OF WORMS .
... the worms , were pounded with a few drops of distilled water , and the juice thus extracted was not alkaline . Some leaves , however , which had been drawn into burrows out of doors , at an unknown antecedent 38 CHAP . I. HABITS OF WORMS .
Pagina 39
... drawn into a burrow , and this part was dark brown and dead , whilst the rest of the leaf was fresh and green . Several leaves of lime and elm removed from burrows out of doors were found affected in different degrees . The first change ...
... drawn into a burrow , and this part was dark brown and dead , whilst the rest of the leaf was fresh and green . Several leaves of lime and elm removed from burrows out of doors were found affected in different degrees . The first change ...
Pagina 56
... drawn within the adjoining rings , so that it appeared truncated and became as thick as the rest of the body . This part could then be seen to swell a little ; and this , I believe , is due to the pharynx being pushed a little forwards ...
... drawn within the adjoining rings , so that it appeared truncated and became as thick as the rest of the body . This part could then be seen to swell a little ; and this , I believe , is due to the pharynx being pushed a little forwards ...
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.