Buplex System. 133 



by induction (described in Chap. VI). These 

 impulses pass through a telephone located in 

 the car to the ground. A Morse operator lis- 

 tening, with the telephone to his ear, will hear 

 the message through the medium of a musical 

 tone chopped up into the Morse code. In like 

 in (inner the operator in the car may transmit a 

 message to the roof of the car and thence 

 through the air to the wire, which will be 

 heard, by any one listening, in a telephone 

 which is connected in that circuit, and, as a 

 matter of fact, it will be heard from any wire 

 that may be strung on any of the poles on 

 either side of the road. 



Some years ago an experiment of this kind 

 was made on one of the roads between Mil- 

 waukee and Chicago. 



What wonderful things can be done with 

 electricity ! As a servant of man it is reliable 

 and accurate seeming almost to have the 

 qualities of docility when under intelligent 

 direction, that is in accord with the laws of 

 nature; but under other conditions it changes 

 from the willing servant to a hard master, hesi- 

 tating not to destroy life or property without 

 regard to persona or things. 



