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This is an authorized facsimile printed by microfilm/xerography on acid-free paper

in 1985 by UNIVERSITY MICROFILMS INTERNATIONAL

Ann Arbor, Michigan, U.S.A.

UIRRA

ESSAYS AND REVIEWS PERTAINING

TO DARWINISM.

ASA GRAY,

noman PhorkosOR OF NATURAL NIATORY (BOTANY) O

VARVARD UNIVERSITI.

NEW YORK:
D. APPLETON AND COMPANY,
840 & 881 BROADWAY.

1877.

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