CHAPTER II

.--PROGRESS OF MAGNETIC THEORY.

Theory of Magnetic Action. 220 Theory of Terrestrial Magnetism. 224 Conclusion. 232

## BOOK XIII.

HISTORY OF GALVANISM, OR VOLTAIC ELECTRICITY.

## CHAPTER I .--DISCOVERY OF VOLTAIC ELECTRICITY. 237

## CHAPTER II .--RECEPTION AND CONFIRMATION OF THE DISCOVERY OF

VOLTAIC ELECTRICITY. 240

## CHAPTER III .--DISCOVERY OF THE LAWS OF THE MUTUAL ATTRACTION AND

REPULSION OF VOLTAIC CURRENTS.--AMPÈRE. 242

## CHAPTER IV .--DISCOVERY OF ELECTRO-MAGNETIC ACTION.--OERSTED. 243

## CHAPTER V .--DISCOVERY OF THE LAWS OF ELECTRO-MAGNETIC ACTION. 245

## CHAPTER VI .--THEORY OF ELECTRODYNAMICAL ACTION.

Ampère's Theory. 246 Reception of Ampère's Theory. 249

## CHAPTER VII .--CONSEQUENCES OF THE ELECTRODYNAMIC THEORY. 250

Discovery of Diamagnetism. 252 {12}

## CHAPTER VIII .--DISCOVERY OF THE LAWS OF MAGNETO-ELECTRIC

INDUCTION.--FARADAY. 253

## CHAPTER IX .--TRANSITION TO CHEMICAL SCIENCE. 256

_THE ANALYTICAL SCIENCE._

## BOOK XIV.

HISTORY OF CHEMISTRY.

## CHAPTER I .--IMPROVEMENT OF THE NOTION OF CHEMICAL ANALYSIS, AND

RECOGNITION OF IT AS THE SPAGIRIC ART. 261

## CHAPTER II .--DOCTRINE OF ACID AND ALKALI.--SYLVIUS. 262

## CHAPTER III .--DOCTRINE OF ELECTIVE ATTRACTIONS.--GEOFFROY.

BERGMAN. 265

##