Volume Ii.

NEW YORK: D. APPLETON AND COMPANY, 549 & 551 BROADWAY. 1875.

CONTENTS

OF THE SECOND VOLUME.

THE SECONDARY MECHANICAL SCIENCES.

BOOK VIII.

HISTORY OF ACOUSTICS.

PAGE Introduction. 23

CHAPTER I.--PRELUDE TO THE SOLUTION OF PROBLEMS IN ACOUSTICS. 24

CHAPTER II.--PROBLEM OF THE VIBRATIONS OF STRINGS. 28

CHAPTER III.--PROBLEM OF THE PROPAGATION OF SOUND. 32

CHAPTER IV.--PROBLEM OF DIFFERENT SOUNDS OF THE SAME STRING. 36

CHAPTER V.--PROBLEM OF THE SOUNDS OF PIPES. 38

CHAPTER VI.--PROBLEM OF DIFFERENT MODES OF VIBRATION OF BODIES IN GENERAL. 41

BOOK IX.

HISTORY OF OPTICS, FORMAL AND PHYSICAL.

Introduction. 51 {8}

FORMAL OPTICS.

CHAPTER I.--PRIMARY INDUCTION OF OPTICS.--RAYS OF LIGHT AND LAWS OF REFLECTION. 53

CHAPTER II.--DISCOVERY OF THE LAW OF REFRACTION. 54

CHAPTER III.--DISCOVERY OF THE LAW OF DISPERSION BY REFRACTION. 58

CHAPTER IV.--DISCOVERY OF ACHROMATISM. 66

CHAPTER V.--DISCOVERY OF THE LAWS OF DOUBLE REFRACTION. 69

CHAPTER VI.--DISCOVERY OF THE LAWS OF POLARIZATION. 72

CHAPTER VII.--DISCOVERY OF THE LAWS OF THE COLORS OF THIN PLATES. 76

CHAPTER VIII.--ATTEMPTS TO DISCOVER THE LAWS OF OTHER PHENOMENA. 78

CHAPTER IX.--DISCOVERY OF THE LAWS OF PHENOMENA OF DIPOLARIZED LIGHT. 80

PHYSICAL OPTICS.

CHAPTER X.--PRELUDE TO THE EPOCH OF YOUNG AND FRESNEL. 85

CHAPTER XI.--EPOCH OF YOUNG AND FRESNEL.

Sect. 1. Introduction. 92 Sect. 2. Explanation of the Periodical Colors of Thin Plates and Shadows by the Undulatory Theory. 93 Sect. 3. Explanation of Double Refraction by the Undulatory Theory. 98 Sect. 4. Explanation of Polarization by the Undulatory Theory. 100 Sect. 5. Explanation of Dipolarization by the Undulatory Theory. 105 {9}