474 Jlr. Alexander Siemens on Electric Bailwaiis. [Feb. 26, 



It will, therefore, be necessary to build special main lines for this 

 fast traffic with no intermediate stations, and with no level crossings 

 of auy kind. They should not have any curves with less than 2000 

 metre radius, except, perhaps, near their stations, where the speed of 

 the car must of necessity be slow. 



In order to justify the capital outlay for such lines, and for their 

 equipment with frequently running cars, an enormous traffic is 

 required, and it is not likely that many places will be found where 

 this condition is fulfilled. 



On the other hand, increased facilities for communication create 

 traffic, and the possibility of reaching Liverpool, for instance, from 

 London in less than two hours may attract a sufficient number 

 of passengers to warrant the making of a new bee-line railway 

 between the two towns. 



Another question is, whether it would not stimulate the traffic 

 between two towns, if the service between them were run at very 

 frequent intervals without increasing the speed of the individual car 

 or train of cars. 



No answer, applicable everywhere, can be given; each case has 

 to be tested on its own merits, and in every case it is the economical 

 result which will decide the issue ; but in estimating the merits of 

 any particular scheme due consideration should be given to the well 

 established principle, " Time is Money." 



[A. S.] 



