The science of life : fully illustrated in tone and line and including many diagrams

CONTENTS

INTRODUCTION

Tue Rance, NATURE, AND Stupy oF Livinc THINGS

§ 1. The origin and aim of this book 3 §6. A preliminary view of living $2. What do we mean by life ? 4. forms

§ 3. The limitation of life in space . 6 § 7. The progress of biological know§ 4. Is there extra-terrestrial life? . 8 ledge :

§5. The subjective side of life 9

BOOK I THE LIVING BODY

CHAPTER J. Tue Bopy 1s A MACHINE

§ 1, The fundamental routine of two §2. Why we call these bodies living creatures : . . 19 machines

CHAPTER II. Tue Comprex Bopy-MACHINE AND How rr Works

§1. What every schoolboy knows § 5. Breathing ;

about the body : : - 24 § 6. Kidneys and other ‘exhaust or§2. About cells; the lesser lives gans .

within our life : : . 28 § 7. How our food becomes blood . §3. Blood . : : § 8. The continual struggle against § 4. The course of the blood . . 35 infection and chill .

CHAPTER III. Tue Harmony anp Direction oF THE Bopy-MACHINE

§1. Astudy of adjustment . . 63 § 5. Sensation and the senses . § 2. Chemical messengers . . 66 § 6. The nervous mechanism and the § 3. Man and Mouse as individuals. 67 brain § 4. The controlling system. . 68

CHAPTER IV. Tue WEARING Out or THE MACHINE AND ITS REPRODUCTION

§ 1. Age and decay : . 88 : 4. Rhythm and birth . § 2. Reproduction and fonilization : go § 5. Childhood, adolescence, and § 3. The growth and dev eee of maturity the Embryo . : 93 BOOK II

THE CHIEF PATTERNS OF LIFE

CHAPTER I. Tue First Great PoHyLuMm: VERTEBRATES

§1. Classification . 105 § 3c. The more ancient class of

§2. What is meant by 4 “ Phylum ” 106 Reptiles

§3. The classes of the Vertebrate § 3p. The linking Amphibians Phylum ; j ‘ . 109g § 3E. Fishes . . :

§3A. Mammals. : . . 109 § 3r. Cyclostomes, a class of de-

§ 3B. Birds . . . : . 112 sraded antiques

mm

3G. Semi-vertebrates

40

43 47

58

84.

96

113 I14 115

116 117