MAKE A MEME View Large Image Darwin, Earthworm, Fig. 5.JPG en Section of the vegetable mould in a field drained and reclaimed 15 years previously A turf; B vegetable mould without any stones; C mould with fragments of burnt marl coal-cinders and quartz pebbles; D ...
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Keywords: Darwin, Earthworm, Fig. 5.JPG en Section of the vegetable mould in a field drained and reclaimed 15 years previously A turf; B vegetable mould without any stones; C mould with fragments of burnt marl coal-cinders and quartz pebbles; D subsoil of black peaty sand with quartz pebbles de Schichtung der Ackererde eines Feldes das 15 Jahre zuvor urbar gemacht und auf dessen Oberfläche zu dieser Zeit Gesteinsmaterial zur Verbesserung der Entwässerung ausgebracht worden war A Grasnarbe; B Ackererde ohne jegliche Steine; C Ackererde mit Bruchstücken von gebranntem Mergel Kohlenschlacken und Quarzkieseln; D Untergrund aus dunklem torfigem Sandboden mit Kieseln Charles Darwin The formation of vegetable mould through the action of worms with observations of their habits London John Murray 1881 Creator Charles Darwin 1881 PD-old-100 The Formation of Vegetable Mould through the Action of Worms
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