Contents

pp v-v

ERRATA

pp vi-vi

INTRODUCTION

pp vii-xlix

EXPOSITION OF MAGNETICAL PRINCIPLES, AND OF THE PHENOMENA OF MAGNETISM AND COMPASS-ACTION AND DISTURBANCE IN IRON SHIPS

pp 1-2

CHAPTER I - GENERAL MAGNETICAL PRINCIPLES AND PHENOMENA

pp 3-7

CHAPTER II - ON THE INDUCTIVE OR MAGNETIC DEVELOPMENT POWER OF THE MAGNET.–MAGNETISATION, WITH NEW AND POWERFUL PROCESSES

pp 8-31

CHAPTER III - MAGNETICAL APPARATUS.–IMPROVEMENTS IN COMPOUND MAGNETS.–MAGNETIC MACHINES, AND COMPASS NEEDLES

pp 32-48

CHAPTER IV - TERRESTRIAL MAGNETISM; ITS DIRECTIVE ACTION ON THE COMPASS AND DIPPING NEEDLE

pp 49-56

CHAPTER V - TERRESTRIAL MAGNETISM, AS TO ITS INDUCTIVE EFFECTS ON IRON, WITH THE AUGMENTATION OF THE POLARITY THUS ELICITED BY MECHANICAL ACTION

pp 57-70

CHAPTER VI - ON THE PRINCIPLES AND PHENOMENA OF THE MAGNETISM IN IRON SHIPS, AS TO ITS ORIGINAL DEVELOPMENT, DIRECTION OF POLAR FORCE AND EQUATORIAL PLANE, AND SUBSEQUENT CHANGES

pp 71-86

CHAPTER VII - OBJECTIONS SUGGESTED AGAINST THE FOREGOING THEORETIC PRINCIPLES.–REFUTATION, BY FACTS AND EXPERIMENTS, OF MANY OF THE OBJECTIONS, AND PROPOSAL OF A PLAN FOR THE TESTING OF THE ENTIRE THEORY

pp 87-96

NARRATIVE OF THE VOYAGE

CHAPTER I

pp 97-115

CHAPTER II

pp 116-213

CHAPTER III

pp 214-282

CHAPTER IV

pp 283-411

Plate section