The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 29
Pagina 41
... broken chain of whitish and often star - shaped dots , about 2 mm , in diameter . The appearance thus pre- sented was curiously like that of a leaf , into which the larva of some minute insect had burrowed . But my son Francis , after ...
... broken chain of whitish and often star - shaped dots , about 2 mm , in diameter . The appearance thus pre- sented was curiously like that of a leaf , into which the larva of some minute insect had burrowed . But my son Francis , after ...
Pagina 46
... broken are seen to be more or less crystalline in structure . How they escape from the gland is a marvel ; but that they do escape is certain , for they are often found in the gizzard , intestines , and in the castings of worms , both ...
... broken are seen to be more or less crystalline in structure . How they escape from the gland is a marvel ; but that they do escape is certain , for they are often found in the gizzard , intestines , and in the castings of worms , both ...
Pagina 78
... broken off . Of these petioles , 314 were pulled out of burrows in the above specified sites ; and it was found that 76 per cent . had been drawn in by their tips , and 24 per cent . by their bases ; so that those drawn in by the tip ...
... broken off . Of these petioles , 314 were pulled out of burrows in the above specified sites ; and it was found that 76 per cent . had been drawn in by their tips , and 24 per cent . by their bases ; so that those drawn in by the tip ...
Pagina 82
... the more attenuated terminal portion of 7 had been previously broken off by some accident . Triangles of paper . - Elongated triangles were cut out of moderately stiff writing - paper , $ 2 CHAP . II HABITS OF WORMS .
... the more attenuated terminal portion of 7 had been previously broken off by some accident . Triangles of paper . - Elongated triangles were cut out of moderately stiff writing - paper , $ 2 CHAP . II HABITS OF WORMS .
Pagina 112
... broken up , the upper parts of three oblique burrows were found surrouuded for lengths of 7 , 4 , and 3 inches with pine - leaves , together with fragments of other leaves which had been given the worms as food . Glass beads and bits of ...
... broken up , the upper parts of three oblique burrows were found surrouuded for lengths of 7 , 4 , and 3 inches with pine - leaves , together with fragments of other leaves which had been given the worms as food . Glass beads and bits of ...
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.