Boys' Second Book of Inventions

Boys' Second Book of Inventions by Ray Stannard Baker. CHAPTER I - The Miracle of Radium - Story of the Marvels and Dangers of the New Element Discovered by Professor and Madame Curie.. CHAPTER II - Flying Machines - Santos-Dumont's Steerable Balloons.. CHAPTER III - The Earthquake Measurer - Professor John Milne's Seismograph.. CHAPTER IV - Electrical Furnaces - How the Hottest Heat is Produced—Making Diamonds.. CHAPTER V - Harnessing the Sun - The Solar Motor.. CHAPTER VI - The Inventor and the Food Problem - Fixing of Nitrogen—Experiments of Professor Nobbe.. CHAPTER VII - Marconi and his Great Achievements - New Experiments in Wireless Telegraphy.. CHAPTER VIII - Sea-Builders - The Story of Lighthouse Building—Stone-Tower Lighthouses Iron Pile Lighthouses and Steel Cylinder Lighthouses.. CHAPTER IX - The Newest Electric Light - Peter Cooper Hewitt and his Three Great Inventions - The Mercury Arc Light—The New Electrical - Converter—The Hewitt Interrupter.