An Unabridged, Digitally Enlarged Printing With Numerous Tables, Charts And Illustrations, To Include: Difficulties In Operating Under High Steam Pressures - Boiler Performance - Engine Performance - Machine Friction And Performance At The Draw Bar - Boiler Pressure As A Factor In Economical Operation - Boiler Capacity As A Factor In Economical Operation - Conclusions Concerning Boiler Pressure Versus Boiler Capacity As A Means Of Increasing The Efficiency Of A Locomotive - The Locomotive Experimented Upon - Methods And Data Derived From Tests - Data Concerning Weight Of Locomotive Boilers - Typical Indicator Cards - A Summary Of Conclusions