270 



Popular Science Monthly 



electrically with turbine engines will prob- 

 ably be employed on the new vessels. 



The British battleship Queen Elizabeth, 

 which took a prominent part in the 

 Dardanelles campaign, has a rating of 

 60,000 horsepower and is a twenty-five- 

 knot vessel. The British Tiger was 

 designed for a speed of 28 knots with a 

 rating of 100,000 horsepower. The German 

 battleship Goeben, which made her famous 

 dash for Turkey at the beginning of the 

 war, is a twenty-eight-knot vessel of 

 70,000 horsepower, while among the later 

 vessels the Seydlitz might be mentioned as 

 a twenty-nine knot, 100,000 horsepower 

 vessel. The Vaterland, most impressive 

 of the German steamers now resting in 

 New York harbor, has a horsepower rating 

 of 65,000 and a speed of twenty-four knots. 



The great Waterside station of the New 

 York Edison Co., located on the 

 East River, is reputed to be the 

 largest steam plant in the world. 

 Two buildings comprise this 

 station. No. i, the original 

 station, has a total capa 

 city of about 165,- 

 000 horsepower, 

 which is con- 

 siderably less 

 than the power 

 of one of the 

 new battle 

 cruisers. The 

 two buildings of 

 the Waterside 

 plant develop about 



and the fall is 160 feet. The power houses 

 planned for both American and Canadian 

 sides of the Falls, including those in opera- 

 tion, are expected to utilize twenty-one 

 and a half per cent of the mean flow of the 

 river, utilizing a total of 650,000 horse- 

 power. This vast amount of power would 

 be insufficient to run even four of our new 

 battle cruisers. 



T 



The motorcycle has many necessary accessories to 

 carry so that a combination lamp and horn arrange- 

 ment fastened to the handlebar saves valuable space 



288,000 horsepower, 

 which is about 60 per cent more power than 

 one of the new battle cruisers will develop. 



The great 59th Street plant of the 

 Interborough Rapid Transit Co., which 

 supplies power for the trains of New York's 

 subway, develops only a little over 65,000 

 horsepower — less than forty per cent 

 of that of the proposed battle cruiser. 



In 1900 the total hydro-electric 

 power developed in the United States 

 was little more than enough to run one 

 of the new battle cruisers, amounting 

 to about 200,000 horsepower. To-day 

 the total horsepower developed hydro- 

 electrically in this country would run 

 about ten of the battle cruisers. 



The greatest hydro-electric develop- 

 ment of all, that at Niagara Falls, is 

 perhaps the most impressive subject 

 of all for comparative purposes. The 

 mean flow of the Niagara River is 

 about 222,000 cubic feet per second 



Turning Your Motorcycle Lamp into ai 

 Horn Without Changing Its Shape | 



ACOMBINED lamp and horn which 

 does not detract from the original 

 lines of the motor vehicle has been invented 

 by Nathaniel B. Wales, of Boston, Mass. 

 He combines in a single unit 

 both the lamp and horn. The 

 electromagnets of the sound 

 producer are mounted in a 

 rear extension of the lamp 

 case without changing its size 

 or shape. Immediately in 

 front of the sound pro- 

 ducer is the electric 

 light bulb. For a 

 megaphone or 

 sound chamber 

 to intensify the 

 volume of sound 

 the inventor 

 utilizes the 

 hood, which fre- 

 quently serves 

 on gas lamps for 

 the escape of heat. In other words, the 

 wall adjacent to the parabolic reflector 

 becomes the sound chamber. Obviously, it 

 is not necessary to change the size of the 

 lamp to do this. If this does not insure 

 a sufficient volume of sound the circular 

 front of the lens case may be utilized. 



/RIGHT HANDLE BAR 

 ■ TAIL LIGHT- 



GROUND 



LAMP BULB 



PERFORATIONS 

 The sound-box of the horn is placed in the rear 

 extension of the lamp case. The hood acts as 

 a megaphone to intensify the volume of sound 



