Vol. 1. Principles of magnetism, Electrostatics; The electric current; Elementary laws of simple continuous currents; The chemical effect of the current; The thermal effect of the current; The magnetic effect of the current; Electro-magnets; Simple measurements in continuous current circuits; Further applications of the effects of the current-the electric telegraph; Magneto-electric induction; The telephone; The dynamical or magnetic production of the electric current; Alternate currents and alternators; Electric transmission of power; Electric motors; Kinetic transformers; The electric discharge; Electrical measurements; Alternate current measurements.- Vol. 2 pt. 1. The technology of electricity; The generation, transmission, and utilisation of electrical power; Alternators; Generating stations; Continuous current motors.- Vol. 2 pt. 2. Technology of electricity.- Vol. 2 pt. 3. Technology of electricity 14