The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina
... Side . By ALFRED SIDGWICK , B. A. , Oxon . $ 1.75 . 48. ORIGIN OF CULTIVATED PLANTS . By ALPHONSE DE CANDOLLE . $ 2.00 . 49. JELLY - FISH , STAR - FISH , AND SEA - URCHINS . A Research on Primi- tive Nervous Systems . By GEORGE J ...
... Side . By ALFRED SIDGWICK , B. A. , Oxon . $ 1.75 . 48. ORIGIN OF CULTIVATED PLANTS . By ALPHONSE DE CANDOLLE . $ 2.00 . 49. JELLY - FISH , STAR - FISH , AND SEA - URCHINS . A Research on Primi- tive Nervous Systems . By GEORGE J ...
Pagina 6
... side ; namely , to weigh all the cast- ings thrown up within a given time in a measured space , instead of ascertaining the rate at which objects left on the surface were buried by worms . But some of my observa- tions have been ...
... side ; namely , to weigh all the cast- ings thrown up within a given time in a measured space , instead of ascertaining the rate at which objects left on the surface were buried by worms . But some of my observa- tions have been ...
Pagina 17
... side of which in the 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 ...
... side of which in the 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 ...
Pagina 21
... side to side as if feeling for some object . They appeared distressed by the light ; but I doubt whether this was really the case , for on two occasions after withdrawing slowly , they remained for a long time with their anterior ...
... side to side as if feeling for some object . They appeared distressed by the light ; but I doubt whether this was really the case , for on two occasions after withdrawing slowly , they remained for a long time with their anterior ...
Pagina 28
... side to side in all directions , apparently as an organ of touch ; and there is some reason to believe , as we shall see in the next chapter , that they are thus enabled to gain a general notion of the form of an object . Of all 28 CHAP ...
... side to side in all directions , apparently as an organ of touch ; and there is some reason to believe , as we shall see in the next chapter , that they are thus enabled to gain a general notion of the form of an object . Of all 28 CHAP ...
Alte ediții - Afișează-le pe toate
Darwin on Humus and the Earthworm: The Formation of Vegetable Mould Through ... Charles Darwin Vizualizare fragmente - 1966 |
Termeni și expresii frecvente
9 inches accumulated acetic acid acid action of worms alimentary canal amount angles animals apex apical appears basal base Beaulieu Abbey beneath the surface broken buried burnt marl burrows cent chalk cinders close concrete covered depth diameter disintegration dragged drawn earth feet field flints floor formed fragments gizzards glands grass ground heavy rain Hensen holes hypocausts Illustrations inches beneath inches deep inches in length inches in thickness inches thick intestines Joyce Knole Park lamellæ land large number larvæ layer leaf leaves Leith Hill Place lime Maer Hall manner matter mortar mouths nearly northern room objects observed particles pasture pavement penetrated petioles pharynx pine-leaves 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 undisturbed upper vegetable mould walls washed weather weight whilst worm-castings worms
Pasaje populare
Pagina 322 - OUTINGS AT ODD TIMES. By CHARLES C. ABBOTT, author of " Days out of Doors " and " A Naturalist's Rambles about Home." i6mo. Cloth, gilt top, $1.25. " A charming little volume, literally alone with Nature, for it discusses seasons and the fields, birds, etc., with the loving freedom of a naturalist born. Every page reads like a sylvan poem; and for the lovers of the beautiful in quiet...