The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina 135
... trenches dug in this field 28 years after the application of the marl , * This case is given in a postscript to my paper in the ' Transact . Geolog . Soc . ' ( Vol . v . p . 505 ) , and contains a serious error , as in the account ...
... trenches dug in this field 28 years after the application of the marl , * This case is given in a postscript to my paper in the ' Transact . Geolog . Soc . ' ( Vol . v . p . 505 ) , and contains a serious error , as in the account ...
Pagina 139
... trench was dug across this part of the field ; and a line of white nodules . could be traced on both sides of the trench , at a depth of 7 inches from the surface . The mould , therefore , ( excluding the turf ) had on the same ...
... trench was dug across this part of the field ; and a line of white nodules . could be traced on both sides of the trench , at a depth of 7 inches from the surface . The mould , therefore , ( excluding the turf ) had on the same ...
Pagina 141
... trenches were dug to see how thick the vegetable mould was . By chance the first trench was made at a spot where at some former period , * S. W. Johnson , How Crops Feed , ' 1870 , p . 139 certainly more than forty years before , a ...
... trenches were dug to see how thick the vegetable mould was . By chance the first trench was made at a spot where at some former period , * S. W. Johnson , How Crops Feed , ' 1870 , p . 139 certainly more than forty years before , a ...
Pagina 144
... trench was dug on the above slope , and the blades of grass were cut off close to the roots , so that the thickness of the turf and of the vegetable mould could be measured accur- ately . The turf was rather less than half an inch , and ...
... trench was dug on the above slope , and the blades of grass were cut off close to the roots , so that the thickness of the turf and of the vegetable mould could be measured accur- ately . The turf was rather less than half an inch , and ...
Pagina 179
... trenches dug at opposite ends of the atrium , so that I might examine the nature of the soil near the remains . The field sloped from east to west at an angle of ... trench . W. West . East . A B 13 CHAP . IV . OF ANCIENT BUILDINGS . 179.
... trenches dug at opposite ends of the atrium , so that I might examine the nature of the soil near the remains . The field sloped from east to west at an angle of ... trench . W. West . East . A B 13 CHAP . IV . OF ANCIENT BUILDINGS . 179.
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...