XXVI. WwW. H. WARREN. 
suburban railways, it is not likely to supersede the steam 
locomotive for ordinary railway traffic on long distances. 
I have no time to consider the method of traction by means of 
storage batteries carried by the car itself, but so far, this has not 
been very successful. Of course if a cheap storage battery could 
be made suitable in every respect for railway traffic, it might 
alter considerably our present notions of electric transmission. 
Time will not permit me to refer to the elevated railways 
worked by electricity. 
Electricity has been largely used for the distribution of power 
in workshops—among which may be mentioned the works of the 
General Electric Company, and the magnificent works at Pittsburg 
recently built by the Westinghouse Company, also the Baldwin 
Locomotive Works at Philadelphia; the Brooks Locomotive 
Works, Dunkirk ; the works of Fried. Krupp, Essen, Messrs. 
Siemens-Holske, Berlin, and many others. It has been 
demonstrated in many cases that this method is most economical, 
as well as having many advantages over the usual methods 
where a series of shafts, counter-shafts, and belting are employ ed. 
Experience has taught, that in shops where both large and small 
machinery is used, it is economy to operate each large machine 
with a separate motor, and to group the smaller machines in 
sections, driving each section with a motor. 
The principal saving in power realized by the electric Sy stem 
of distribution is due to the fact that when a machine is stopped, 
the power required to drive it stops at the generator, and not 
simply at the machine itself, as in the case when driven by ® 
system of shafting. Further, when the load is reduced, the loss 
in line wire between generator and motor is reduced directly 
in proportion to the reduction of current consumed by the motor. 
This regulation is instantaneous, and at any time the dynamo only 
generates as much current as is — bis the motors at that 
particular time. 
__ The large engine, upon the crank shaft of which the armature 
=e oe ar generator is fixed, is far more cconomical than 
