268 POWER DISTRIBUTION FOR ELECTRIC RAILROADS.
moderate voltage and relatively low frequency meets the
requirements.
That fast electric trains over long disiances are soon
coming, no one who is conversant with the art of electric
traction can seriously doubt. How extensive such service
will be, how far it will supersede present methods, and
what methods out of those which are now practicable will
survive competitive trial—these are questions for the
prophet rather than the engineer.