Discussion on “the determination of the economic location of sub-stations in electric railways”, at Atlantic city, N. J., July 1, 1908

C. J. Hopkins: On December 15, 1905, a paper was read before this Institute on the most economical location of sub-stations for direct-current systems. Mr. Werner´s paper only differs from that, as far as I understand it, in its particular reference to single-phase systems.