The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 7
... Triangles of paper - Summary of reasons for believing that worms exhibit some intelligence— Means by which they excavate their burrows , by pushing away the earth and swallowing it - Earth also swallowed for the nutritious matter which ...
... Triangles of paper - Summary of reasons for believing that worms exhibit some intelligence— Means by which they excavate their burrows , by pushing away the earth and swallowing it - Earth also swallowed for the nutritious matter which ...
Pagina 55
... Triangles of paper - Summary of reasons for believing that worms exhibit some intelligence - Means by which they excavate their burrows , by pushing away the earth and swal- lowing it - Earth also swallowed for the nutritious matter ...
... Triangles of paper - Summary of reasons for believing that worms exhibit some intelligence - Means by which they excavate their burrows , by pushing away the earth and swal- lowing it - Earth also swallowed for the nutritious matter ...
Pagina 82
... Triangles of paper . - Elongated triangles were cut out of moderately stiff writing - paper , $ 2 CHAP . II HABITS OF WORMS .
... Triangles of paper . - Elongated triangles were cut out of moderately stiff writing - paper , $ 2 CHAP . II HABITS OF WORMS .
Pagina 83
... triangles were three inches in length , with the bases of 120 one inch , and of the other 183 half an inch in length . These latter triangles were very narrow or much acuminated . * As a check on the observations presently to be given ...
... triangles were three inches in length , with the bases of 120 one inch , and of the other 183 half an inch in length . These latter triangles were very narrow or much acuminated . * As a check on the observations presently to be given ...
Pagina 84
... triangle was doubled up , with the apex and base left sticking out of the tube . As the sides of the triangles were three inches in length , the result of their being drawn into a tube or into a burrow in different ways , may be ...
... triangle was doubled up , with the apex and base left sticking out of the tube . As the sides of the triangles were three inches in length , the result of their being drawn into a tube or into a burrow in different ways , may be ...
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.