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THE STUDY OF ANIMAL LIFE

THE STUDY OF
ANIMAL LIFE

BY J. ARTHUR THOMSON, M.A., LL.D.

RECIUS PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF ABERDEEN;
AUTHOR OF "HEREDITY,"* "THE BIOLOGY OF THE SEASONS,"
"THE WONDER OF LIFE," ETC.;
JOINT AUTHOR OF "THE EVOLUTION OF SEX," "EVOLUTION," "SEX," ETC.

WITH ILLUSTRATIONS

f 4.-

[4^) REVISED EDITION

NEW YORK
CHARLES SCRIBNER'S SONS

597-599 FIFTH AVENUE

a.

First Edition .

Reprinted .

Second Edition.

Third Edition .

Reprinted . .

Fourth (revised) Edition

June 1892 December 1892 December 1896 June 1901 May 1906 January 1917

PREFACE

For about a quarter of a century this book—now revised —has had an apparently useful life as an introduction to zoological science. Its plan is simple:

(a) It begins with the everyday life of animals, their haunts, their inter-relations, their struggles, their industries, their family life, their behaviour, and their internal activities.

(b) The second aspect considered is that of structure—, the multitudinous forms of animal life and their architecture.

(c) The third part has to do with the continuance of the race and with life-histories.

(d) Finally, the facts and problems of evolution are illustrated.

The four parts of the book correspond broadly to Physiology, Morphology, Embryology, and Etiology, but there has been no punctilious observation of boundarylines.

The four parts of the book will appeal to students of different tastes. For some are most interested in habits and functions, others in form and structure, others in development and life-history, and others in the general problems of evolution. Each of these aspects has its own interest, and the student should begin with the one which most attracts xhim. But all must be taken into account if we are to get an all-round view of animal life.

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