Completing the One-Fathom Bank Lighthouse in the Malacca Straits 262 The One-Fathom Bank Lighthouse, Malacca Straits, in Course of Erection 263 The Platte Fougère Lighthouse under Construction 268 The Platte Fougère Lighthouse 269 Setting the Compressed-Air Reservoir at Fort Doyle 270 The Fort Doyle Siren 271 An Unattended Beacon Light placed upon a Wild Part of the Scottish Coast 272 The Gasfeten Light: a Lonely Beacon in Swedish Waters 273 The Dalén “Sun-Valve,” the Most Wonderful Invention of Modern Lighthouse Engineering 274 The Gas Accumulators Employed with the Dalén Automatic System 275 The Lagerholmen Lighthouse 278 An Unattended Beacon Light in the Straits of Magellan 279 An Automatic Lightboat 279 The Wigham Thirty-One Day Unattended Petroleum Light 280 Willson Automatic Gas and Whistling Light off Egg Island, Nova Scotia 281 The “Outer Automatic” Combined Gas and Whistling Light, Halifax, Nova Scotia 281 The _Svinbādan_ Unattended Lightship in Swedish Waters 292 The _Kalkgrundet_, Sweden’s Latest Automatic Lightship 293 The Lantern used in the Wigham Automatic Petroleum Beacon 298 The “6-Bar” Floating Wigham Light in Portsmouth Harbour 299 The Pumps whereby the Oil is lifted from the Lowest Floor to the Lantern Room 306 Combined Kitchen and Living-Room in the Lighthouse 307 Keeper cleaning the Lamp after it has cooled down 312 A Lighthouse Bedroom 313 CHAPTER I THE ORIGIN OF THE LIGHTHOUSE