Page:The Formation of Vegetable Mould through the Action of Worms (1881).djvu/7

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THE FORMATION

OF

VEGETABLE MOULD,

THROUGH THE

ACTION OF WORMS,

WITH

OBSERVATIONS ON THEIR HABITS.


By CHARLES DARWIN, LL. D., F.R.S.


WITH ILLUSTRATIONS


LONDON:
JOHN MURRAY, ALBEMARLE STREET.
1881.

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