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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.

NEW YORK:
D. APPLETON & COMPANY,
1, 3, AND 5 BOND STREET.

1892.

KD 58137

HARVARD COLLEGE LIONARY

THE BEQUEST OF THEODORE JEWETT EASTMAN

1931

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