The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina 5
... feet above the sea . In woods again , if the loose leaves in autumn are removed , the whole surface will be found strewed with castings . Dr. King , the superintendent of the Botanic Garden in Calcutta , to whose kindness I am indebted ...
... feet above the sea . In woods again , if the loose leaves in autumn are removed , the whole surface will be found strewed with castings . Dr. King , the superintendent of the Botanic Garden in Calcutta , to whose kindness I am indebted ...
Pagina 11
... feet from the grassy paths , and here their castings had been thrown up among the heath ; but beyond this limit , not a single casting could be found . A layer , though a thin one , of fine earth , which probably long retains some ...
... feet from the grassy paths , and here their castings had been thrown up among the heath ; but beyond this limit , not a single casting could be found . A layer , though a thin one , of fine earth , which probably long retains some ...
Pagina 12
... feet on Schiehallion in Scotland . They are numerous on some hills near Turin at from 2000 to 3000 feet above the sea , and at a great altitude on the Nilgiri Mountains in South India and on the Himalaya . Earth - worms must be ...
... feet on Schiehallion in Scotland . They are numerous on some hills near Turin at from 2000 to 3000 feet above the sea , and at a great altitude on the Nilgiri Mountains in South India and on the Himalaya . Earth - worms must be ...
Pagina 101
... ing having weighed 33 grains . Whenever a worm burrows to a depth of some feet in undisturbed compact ground , it must form its passage by swallowing the earth ; for it is incredible CHAP . II . EXCAVATION OF THEIR BURROWS . 101.
... ing having weighed 33 grains . Whenever a worm burrows to a depth of some feet in undisturbed compact ground , it must form its passage by swallowing the earth ; for it is incredible CHAP . II . EXCAVATION OF THEIR BURROWS . 101.
Pagina 110
... feet ; in North Germany , according to Hoff- meister , from 6 to 8 feet , but Hensen says , from 3 to 6 feet . This latter observer has seen worms frozen at a depth of 13 feet beneath the surface . I have not myself had many ...
... feet ; in North Germany , according to Hoff- meister , from 6 to 8 feet , but Hensen says , from 3 to 6 feet . This latter observer has seen worms frozen at a depth of 13 feet beneath the surface . I have not myself had many ...
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...