THE WORLD'S ADVANCE 



325 



A Near View of the Model, Which Measures Fifty- seven Inches in Length and is Complete to the 



Minutest Detail. 



draughtsmen among them quickly de- 

 signed the model shop. Within a few 

 days, both shop and locomotive were 

 well under way. The locomotive was 

 completed in two hundred working days, 

 and it is perfect in every detail. It was 

 built on a one-sixteenth scale, after the 

 Pacific Type Class "K-4," and measures 

 fifty-seven inches in length. It is now 

 on exhibition in a Broadway ticket of- 

 fice of the Erie Railroad. 



PECULIAR KIND OF GLASSES 



USED BY COMMANDERS 



OP SUBMARINES 



Peculiar glasses are now being used 

 by the commanders of German subma- 

 rines. These are known as double vision 

 glasses or bifocals and are especially 

 adapted for use under the sea. In the 

 undersea warfare they are very impor- 

 tant, for they allow the officers in charge 

 to observe hostile ships through the peri- 

 scope and then consult their charts or 

 maps without removing their glasses. 

 The time saved in this way is very im- 

 portant when a torpedo is to be fired 

 or when the submarine must make a 

 hasty getaway. These glasses are made 

 from a single piece of perfect ophthalmic 



glass, combining both distance and read- 

 ing portions in one lense. 



It is largely due to small details such 

 as the glasses just described that the 

 German submarines have proven so ef- 

 ficient in their deadly work. 



MOTOR LEADS BICYCLE 



Garage owners who make a practice 

 of delivering their patron's cars can save 

 time and money if a bicycle 

 is attached behind the auto- 

 mobile for the return of the 

 driver when the car has 

 been delivered. 



A Special Clamping Device Permits of Trailing a 

 Bicycle in Back of an Automobile. 



The clamp by which the bicycle is at- 

 tached to the automobile consists of a 

 pair of rubber-faced hardwood jaws and 



