1Introduction
11CHAPTER XII: THE MOST STRIKING INVENTION OF RECENT TIMES
2CHAPTER III: THE FUEL OF THE FUTURE
12CHAPTER XIII: HOW PICTURES CAN BE SENT BY WIRE
3CHAPTER IV: SOME VALUABLE ELECTRICAL PROCESSES
13CHAPTER XIV: A WONDERFUL EXAMPLE OF SCIENCE AND SKILL
4CHAPTER V: MACHINE-MADE COLD
14CHAPTER XV: SCIENTIFIC TESTING AND MEASURING
5CHAPTER VI: SCIENTIFIC INVENTIONS AT SEA
15CHAPTER XVI: COLOUR PHOTOGRAPHY