| METALLIC BURNING MIRRORS | [117] |
CHAPTER VII.
| LENSES | [127] |
CHAPTER VIII.
| OPTICAL INSTRUMENTS.—THE SIMPLE AND COMPOUND MICROSCOPE. THE SOLAR AND PHOTO-ELECTRIC MICROSCOPE | [141] |
CHAPTER IX.
| THE TELESCOPES OF GALILEO, GREGORY, NEWTON, HERSCHEL, LORD ROSSE, AND FOUCAULT | [150] |
PART III.
NATURAL MAGIC.