Illustrations xvii 



r*cura 



HO* 



SIXTEEN MILK CANYON, MONTANA (Coloured Illustration) . . . 804 

 Reproduced by permission of J. Jackson & Sons, European Agents for 

 the Chicago, Milwaukee, and St. Pnul Kailway. 



ROTARY CONVERTERS .......... 806 



By permission of the British Thomson-Houston Co., Ltd. 



STORAGE BATTERIES OR ACCUMULATORS ....... 806 



By permission of the Chloride Electrical Storage Co., Ltd. 



"THE DEAD MAN'S HANDLE" 807 



By permission of Underground Electric Railways Co., Ltd. 



ELECTRIC TRAINS THROUGH THE ALPS ....... 808 



ELECTRIFIED YARDS AT BUTTE, MONTANA ...... 809 



By permission of J. Jackson & Sons, European Agents for the Chicago, 

 Milwaukee, and St. Paul Railway. 



AN ELECTRIC "FLIER" CROSSING THE "ROCK-IBS" . . . . .812 



By permission of J. Jackson & Sons, European Agents for the Chicago, 

 Milwaukee, and St. Paul Railway. 



IN THE CANYON OF THE JEFFERSON RIVER, MONTANA .... 813 



SIDE VIEW OF ELECTRIC LOCOMOTIVE HAULING PASSENGER TRAIN . 813 

 By permission of J. Jackson & Sons, European Agents for the Chicago, 

 Milwaukee, and St. Paul Railway. 



NIAGARA FALLS AS VIEWED FROM THE AIR . . . . . . . 816 



By permission of the Ontario Government Office. 



THE ROTOR OF A PARSONS STEAM TURBINE ..... 817 

 Reproduced by permission of the Cunard Co. 



ELECTRIC INCANDESCENT LAMPS . ...... 817 



By permission of the British Thomson-Houston Co., Ltd. 



LISTENING IN AT A WIRELESS CLUB ....... 824 



Photo: Topical Press Agency. 



WIRELESS RECEIVING-ROOM, TOWYN ....... 824 



By permission of Marconi's Wireless Telegraph Co., Ltd. 



A DIAGRAM SHOWING THE MANNER IN WHICH Two RECEIVING WIRELESS 

 STATIONS EQUIPPED WITH DIRECTIONAL FRAMB AERIALS CAN 

 DETERMINE THE POSITION OF AN AEROPLANE WHICH is SENDING OUT 

 WIRELESS SIGNALS BY ITS TRAILING AERIAL WIRE .... 825 

 From Fifty Yeart of Electricity (The Wireless Press, Ltd.). 



AN ELECTRIFIED BODY AT REST AND IN MOTION ..... 825 

 LEYDEN JAR ......... 825 



