Engineeríng  Problems  ín

Electríc  Elevated  and  Suburban Raílroadíng
 

The  Multiple  Unít System
 

By  FRANK J. SPRAGUE

         Past  Presídent, Amerícan Instítute of Electrical Engineers
 

    A Paper Delívered Before the

American Institute of Electrical Engineers

           May 16, 1899
 

               Repriivted itom the

Stteet Railway Fournal, C.issier's M.ig.nine (Electtic Railw.iy Numbet)

                  and the

  Transactioii! of the Amoican Instilule of Electric_l Eiiginí-r_