CONTENTS. 



PAGE 



INTRODUCTION 1 



first 



PHOSPHOBESCENCE OF MINERALS. 



CHAPTER 



I. PHOSPHOEESCENCE AFTEB INSOLATION ... 11 

 II. PHOSPHOEESCENCE BY HEAT . ... 18 



III. PHOSPHOBESCENCE BY CLEAVAGE, FEICTION, PEB- 



CIJSSION, CEYSTALLIZATION, AND MOLECTJLAE 



OB CHEMICAL CHANGE . . . .25 



IV. PHOSPHOEESCENCE OF GASES . . 38 

 V. METEOEOLOGICAL PHOSPHOEESCENCE . .. . 43 



VI. DUBATION, INTENSITY, AND COLOTJE OF PHOS- 



PHOEIC LIGHT IN MINEEAL BODIES . . 70 



VII. INVISIBLE PHOSPHOEESCENCE 72 



