The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their HabitsAppleton, 1892 - 326 pagini |
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Pagina 18
... diameter , may generally be found in their gizzards and intestines . As it is certain that worms swal- low little stones , in- dependently of those swal- lowed while excavating their burrows , it is prob- many able that they serve ...
... diameter , may generally be found in their gizzards and intestines . As it is certain that worms swal- low little stones , in- dependently of those swal- lowed while excavating their burrows , it is prob- many able that they serve ...
Pagina 41
... 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 making and examining sections , could nowhere find that the cell - walls ...
... 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 making and examining sections , could nowhere find that the cell - walls ...
Pagina 44
... diameter from 2 to 6 μ . They contain in their centres a little excessively fine granular matter ; but they look so like oil globules that Claparède and others at first treated them with ether . This produces no effect ; but they are ...
... diameter from 2 to 6 μ . They contain in their centres a little excessively fine granular matter ; but they look so like oil globules that Claparède and others at first treated them with ether . This produces no effect ; but they are ...
Pagina 45
... diameter . When a gland includes only a few very small concretions , or , as sometimes happens , none at all , it is easily overlooked . The large concretions are round or oval , and exteriorly almost smooth . One was found which filled ...
... diameter . When a gland includes only a few very small concretions , or , as sometimes happens , none at all , it is easily overlooked . The large concretions are round or oval , and exteriorly almost smooth . One was found which filled ...
Pagina 83
... diameter of a worm- burrow . If seized by the apex , the triangle was drawn straight into the tube , with its margins infolded ; if seized at some little distance from the apex , for instance at half an inch , this much was doubled back ...
... diameter of a worm- burrow . If seized by the apex , the triangle was drawn straight into the tube , with its margins infolded ; if seized at some little distance from the apex , for instance at half an inch , this much was doubled back ...
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.