CONTENTS


CHAPTER PAGE

I LIGHT AND PROGRESS 3

II THE ART OF MAKING FIRE 15

III PRIMITIVE LIGHT-SOURCES 24

IV THE CEREMONIAL USE OF LIGHT 38

V OIL-LAMPS OF THE NINETEENTH CENTURY 51

VI EARLY GAS-LIGHTING 63

VII THE SCIENCE OF LIGHT-PRODUCTION 80

VIII MODERN GAS-LIGHTING 97

IX THE ELECTRIC ARCS 111

X THE ELECTRIC INCANDESCENT FILAMENT LAMPS 127

XI THE LIGHT OF THE FUTURE 143

XII LIGHTING THE STREETS 152

XIII LIGHTHOUSES 163