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THE

ORIGIN OF SPECIES

BY MEANS OF NATURAL SELECTION

OR THE

PRESERVATION OF FAVOURED RACES IN THE STRUGGLE

FOR LIFE.

By CHARLES DARWIN, M.A., F.R.S., &c.

SIXTH EDITION, WITH ADDITIONS AND CORRECTIONS.

(THIRTEENTH THOUSAND.)

LONDON

JOHN MURRAY, ALBEMARLE STREET.

1873.