CONTENTS.

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John Henry Pepper
PAGE
INTRODUCTION. 1
CHAPTER I.
THE PROPERTIES OF MATTER—IMPENETRABILITY 3
CHAPTER II.
CENTRIFUGAL FORCE 17
CHAPTER III.
THE SCIENCE OF ASTRONOMY 19
CHAPTER IV.
CENTRE OF GRAVITY 32
CHAPTER V.
SPECIFIC GRAVITY 48
CHAPTER VI.
ATTRACTION OF COHESION 59
CHAPTER VII.
ADHESIVE ATTRACTION 67
CHAPTER VIII.
CAPILLARY ATTRACTION 69
CHAPTER IX.
CRYSTALLIZATION 73
CHAPTER X.
CHEMISTRY 81
CHAPTER XI.
CHLORINE, IODINE, BROMINE, FLUORINE 129
CHAPTER XII.
CARBON, BORON, SILICON, SELENIUM, SULPHUR, PHOSPHORUS 151
CHAPTER XIII.
FRICTIONAL ELECTRICITY 173
CHAPTER XIV.
VOLTAIC ELECTRICITY 193
CHAPTER XV.
MAGNETISM AND ELECTRO-MAGNETISM 206
CHAPTER XVI.
ELECTRO-MAGNETIC MACHINES 211
CHAPTER XVII.
THE ELECTRIC TELEGRAPH 218
CHAPTER XVIII.
RUHMKORFF'S, HEARDER'S, AND BENTLEY'S COIL APPARATUS 230
CHAPTER XIX.
MAGNETO-ELECTRICITY 241
CHAPTER XX.
DIA-MAGNETISM 247
CHAPTER XXI.
LIGHT, OPTICS, AND OPTICAL INSTRUMENTS 255
CHAPTER XXII.
THE REFRACTION OF LIGHT 298
CHAPTER XXIII.
REFRACTING OPTICAL INSTRUMENTS 303
CHAPTER XXIV.
THE ABSORPTION OF LIGHT 327
CHAPTER XXV.
THE INFLECTION OR DIFFRACTION OF LIGHT 328
CHAPTER XXVI.
THE POLARIZATION OF LIGHT 335
CHAPTER XXVII.
HEAT 352
CHAPTER XXVIII.
THE STEAM-ENGINE 406
CHAPTER XXIX.
THE STEAM-ENGINE—continued 418

                                                                                                                                                                                                                                                                                                           

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