The Formation of vegetable mould, through the action of worms, with observations on their habitsJ. Murray, 1895 - 328 pagini |
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Pagina 35
... contain ; but to this subject I must recur . They also con- sume a large number of half - decayed leaves of all kinds , excepting a few which have an unpleasant taste or are too tough for them ; likewise petioles , peduncles and decayed ...
... contain ; but to this subject I must recur . They also con- sume a large number of half - decayed leaves of all kinds , excepting a few which have an unpleasant taste or are too tough for them ; likewise petioles , peduncles and decayed ...
Pagina 41
... contained nothing but broken down granular matter . These effects must be attributed to the trans- udation of the secretion through the epidermis into the cells . The secretion with which worms moisten leaves likewise acts on the starch ...
... contained nothing but broken down granular matter . These effects must be attributed to the trans- udation of the secretion through the epidermis into the cells . The secretion with which worms moisten leaves likewise acts on the starch ...
Pagina 44
... 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 quickly dissolved with ...
... 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 quickly dissolved with ...
Pagina 45
... contained in the cells oc- casionally aggregates into small rhombic crystals or into concretions , which lie be- tween the lamella ; but I have seen only one , and Claparède only a very few such cases . The two anterior glands differ a ...
... contained in the cells oc- casionally aggregates into small rhombic crystals or into concretions , which lie be- tween the lamella ; but I have seen only one , and Claparède only a very few such cases . The two anterior glands differ a ...
Pagina 47
... contained two rather large concre- tions , for near the walls several cylindrical and oval pipes were intersected , which were lined with cellular matter and were quite filled with free calciferous cells . A great enlargement in one ...
... contained two rather large concre- tions , for near the walls several cylindrical and oval pipes were intersected , which were lined with cellular matter and were quite filled with free calciferous cells . A great enlargement in one ...
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...