This text contains a comprehensive guide to electric arc welding, and is confined almost exclusively to autogenous electric arc welding. The material is conveniently and logically arranged for ready reference. A large amount of practical information on many phases of the application of the art has been incorporated, for instance: descriptions of welding systems and they installation, phenomena of the metallic and carbon welding arc, training of operators, sequence of metal disposition for various types of joints and building up operations, electrode materials used, and much more. This text will be of much value to modern readers with an interest in welding and the development thereof, and it constitutes a worthy addition to collections of antiquarian welding and metalwork literature. The chapters of this volume include: History of the Evolution of Welding Processes - Smith or Forge Welding, Resistance Welding, Thermit Welding, Oxy-acetylene Welding, And Electric Welding, Equipment for Electric Arc Welding - Types Used, Operating Characteristics and Circuits, et cetera. This text was first published in 1918, and is proudly republished now complete with a new introduction on metalworking.