The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina
... walls penetrated by worms - Subsidence of a modern pavement The buried pavement at Beaulieu Abbey -Roman villas at Chedworth and Brading — The remains of the Roman town at Silchester - The nature of the débris by which the remains are ...
... walls penetrated by worms - Subsidence of a modern pavement The buried pavement at Beaulieu Abbey -Roman villas at Chedworth and Brading — The remains of the Roman town at Silchester - The nature of the débris by which the remains are ...
Pagina
... walls by worms - Subsidence of the floors- Thickness of the mould - The old Roman city of Wroxeter - Thickness of the mould - Depth of the foundations of some of the buildings Conclusion 176-229 CHAPTER V. THE ACTION OF WORMS IN THE ...
... walls by worms - Subsidence of the floors- Thickness of the mould - The old Roman city of Wroxeter - Thickness of the mould - Depth of the foundations of some of the buildings Conclusion 176-229 CHAPTER V. THE ACTION OF WORMS IN THE ...
Pagina 19
... walls of the intestine , by which means an extensive absorbent surface is gained . The circulatory system is well developed . Worms breathe by their skin , as they do not possess any special respiratory organs . The two sexes are united ...
... walls of the intestine , by which means an extensive absorbent surface is gained . The circulatory system is well developed . Worms breathe by their skin , as they do not possess any special respiratory organs . The two sexes are united ...
Pagina 37
... walls ; for it is well known that all other nutri- tious substances are almost completely with- drawn from leaves , shortly before they fall off . It has , however , now been ascertained that cellulose , though very little or not at all ...
... walls ; for it is well known that all other nutri- tious substances are almost completely with- drawn from leaves , shortly before they fall off . It has , however , now been ascertained that cellulose , though very little or not at all ...
Pagina 40
... wall were so tough that they could not be gnawed by worms , but after four davs they were affected in a peculiar manner by the secretion poured out of their mouths . The upper surfaces of the leaves , over which the worms had crawled ...
... wall were so tough that they could not be gnawed by worms , but after four davs they were affected in a peculiar manner by the secretion poured out of their mouths . The upper surfaces of the leaves , over which the worms had crawled ...
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...