CONTENTS. 13 



CHAPTER VIII. THEORY OF DEFINITE, RECIPROCAL, AND 

 MULTIPLE PROPORTIONS. 



PAGE 



Sect. 1. Prelude to the Atomic Theory, and its Publication by Dal ton 285 



Sect. 2. Keception and Confirmation of the Atomic Theory 288 



Sect. 3. The Theory of Volumes. Gay-Lussac 290 



CHAPTER IX. EPOCH OF DAVY AND FARADAY. 



Sect. 1 . Promulgation of the Electro-chemical Theory by Davy 291 



Sect. 2. Establishment of the Electro-chemical Theory by Faraday 296 



Sect. 3. Consequences of Faraday's Discoveries 302 



Sect. 4. Reception of the Electro-chemical Theory 303 



CHAPTER X. TRANSITION FROM THE CHEMICAL TO THE 



CLASSIFICATORY SCIENCES.. 305 



THE ANALYTICO-CLASSIFICATOEY SCIENCE. 



BOOK XV. 



HISTORY OF MINERALOGY. 



INTRODUCTION 



Sect. 1. Of the Classificatory Sciences 31 3 



Sect. 2. Of Mineralogy as the Analytico-classificatory Science 314 



CRYSTALLOGRAPHY. 



CHAPTER I. PRELUDE TO THE EPOCH OF DE LISLE AND 



HAUY 316 



CHAPTER II. EPOCH OF ROME DE LISLE AND HAUY. 

 ESTABLISHMENT OF THE FIXITY OF CRYSTALLINE AN- 

 GLES, AND THE SIMPLICITY OF THE LAWS OF DERIVA- 

 TION 320 



CHAPTER III. RECEPTION AND CORRECTIONS OF THE HAU- 



i'AN CRYSTALLOGRAPHY.. 32-J 



