The Principles of Biology, Volume 1 (of 2)

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PREFACE PREFACE.

Volume 1 / Part 1 · Parts

Volume 1 / Part 1 · Chapters

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Chapter III · A.

Volume 1 / Part 1 · Chapters

Volume 1 / Part 1 · Other sections

Chapter VI · A.

Volume 1 / Part 1 · Chapters

Volume 1 / Part 2 · Parts

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Volume 1 / Part 2 · Other sections

Chapter II · A.

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Chapter VI · A.

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Volume 1 / Part 2 · Other sections

Chapter X · A.

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Volume 1 / Part 3 · Parts

Volume 1 / Part 3 · Chapters

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Volume 1 / Part 3 · Other sections

Chapter XIV · A.APPENDIX A.APPENDIX B.APPENDIX B. (continued 2)APPENDIX B. (continued 3)APPENDIX C.APPENDIX D.

THE PRINCIPLES OF BIOLOGY

BY

HERBERT SPENCER

Illustration from The Principles of Biology, Volume 1 (of 2)

IN TWO VOLUMES

VOLUME I

NEW YORK AND LONDON D. APPLETON AND COMPANY 1910

Copyright, 1866, 1898, By D. APPLETON AND COMPANY.

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