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HISTORY AND DEVELOPMENT OF ELECTRIC  TRAIN OPERATION

          Ríchmond and Chicago Contracts.............................................................  5

          Conditíons Governing Rapíd Transít...........................................................  6

          Kínds of Application..............................................,..........................  6

                Single Cars............................................................................  6

                Eĩectric Locomotives...................................................................  6

                Locomotive Cars wíth One and  Two Units..............................................  7

          Need of New System........................................................................  8

          Varying Practices up to 1897---.............................................................  8

          Wallace's Paper American Institute of Cívi! Engineers, 1897....................................  8

          Condítíons in Spring of 1897.................................................................  9



THE SPRAGUE MULTIPLE UNIT  SYSTEM

          General  Descríption.............."........................................................... 11

          Similarity of Equipment...................................................................... J1

          Independence and Facility of Operation...................................................... 11

          Increased Schedules.......................................................................... 12

          Reduced Strains............................................................................. 12

          Increased Densíty............................................................................ 12

          Better Equipment........................................................................... 12

          Reduced Number of Cars.................................................................... 13

          Símplícity of Operatíon...................................................................... 13

          Ease of Inspection........................................................................... 13

          Economy.................................................................................... 13

          Safcty...................................................................................... 13

          Least Cost.................................................................................. 14

          Resume  of Features.......................................................................... 14



THE MULTIPLE UNIT SYSTEM ON THE SOUTH SIDE ELEVATED RAILWAY, OF CHICAGO

          Physicaĩ Conditions........................................................................ 16

          Conditions of Contract....................................................................... 16

          Trial  Equipments.....................................................                    . ■ 17

          Power House..............................................................................■. 18

          Dístributíon................................................................................. 19

          Storage Batteries............................................................................ 20

          Detaíls of Car Equípment and  Control........................................................ 20

          Characteristics of Motors  and Engíneeríntj..................................................... 22

          Financial Results............................................................................ 23



ESSENTIAL  FEATURES OF ELEVATED  AND  SUBURBAN  RAILWAY EQUIPMENT............ 25



A DISCUSSION BY  MEMBERS  OF AMERICAN INSTITUTE OF  ELECTRICAL ENGINEERS-  ... 26



CHRONOLOGY OF  MODERN ELECTRIC  TRAIN OPERATION  FROM  1880 TO  1899       .... 33