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ORIGIN OF SPECIES BY MEANS OF NATURAL SELECTION; or, THE PREservation of Favored RacES IN THE STRUGGLE FOR LIFE. New and revised edition, with Additions. 12mo. Cloth, $2.00.

DESCENT OF MAN, AND SELECTION IN RELATION TO SEX. With many Illustrations. A new edition. 12mo. Cloth, $3.00. JOURNAL OF RESEARCHES INTO THE NATURAL HISTORY AND GEOLOGY OF THE COUNTRIES VISITED DURING THE VOYAGE OF H. M. S. BEAGLE ROUND THE WORLD. A new edition. 12mo. Cloth, $2.00.

EMOTIONAL EXPRESSIONS OF MAN AND THE LOWER ANIMALS. 12mo. Cloth, $3.50.

THE VARIATIONS OF ANIMALS AND PLANTS DOMESTICATION. With a Preface, by Professor ASA GRAY. trated. Cloth, $5.00.

INSECTIVOROUS PLANTS. 12mo. Cloth, $2.00.

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MOVEMENTS AND HABITS OF CLIMBING PLANTS. With Illustrations. 12mo. Cloth, $1.25.

THE VARIOUS CONTRIVANCES BY WHICH ORCHIDS ARE FERTILIZED BY INSECTS. Revised edition, with Illustrations. 12mo. Cloth, $1.75.

THE EFFECTS OF CROSS AND SELF FERTILIZATION IN THE VEGETABLE KINGDOM. 12mo. Cloth, $2.00.

DIFFERENT FORMS OF FLOWERS ON PLANTS OF THE
SAME SPECIES. With Illustrations. 12mo. Cloth, $1.50.

THE POWER OF MOVEMENT IN PLANTS. By CHARLES DAR-
WIN, LL. D., F. R. S., assisted by FRANCIS DARWIN. With Illustrations.
Cloth, $2.00.

12mo.

THE FORMATION OF VEGETABLE MOULD, THROUGH THE ACTION OF WORMS. With Observations on their Habits. With Iltrations. 12mo. Cloth, $1.50.

For sale by all booksellers; or sent by mail, post-paid, on receipt of price.

New York: D. APPLETON & CO., 1, 3, & 5 Bond Street.

McFarland

THE VARIATION

OF

ANIMALS AND PLANTS

UNDER

DOMESTICATION.

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

SECOND EDITION, REVISED. FOURTH THOUSAND,

IN TWO VOLUMES.-VOL. II.

WITH ILLUSTRATIONS.

NEW YORK:

D. APPLETON AND COMPANY,
1, 2, AND 5 BOND STREET.

1890.

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