[CHAPTER XII]—Condensers—Materials
[CHAPTER XIII]—Current Supply to Transmitters—Local Battery—Common Battery—Diagrams of Common-Battery Systems
[CHAPTER XIV]—Telephone Sets: Magneto, Series and Bridging, Common-Battery
Party-Line Systems By K. B. Miller and S. G. McMeen Page 227
[CHAPTER XV]—Non-Selective Party-Line Systems—Series and Bridging—Signal Code
[CHAPTER XVI]—Selective Party-Line Systems: Polarity, Harmonic, Step-by-Step, and Broken-Line
[CHAPTER XVII]—Lock-Out Party-Line Systems: Poole, Step-by-Step, and Broken-Line
Protection By K. B. Miller and S. G. McMeen Page 287
[CHAPTER XVII]—Electrical Hazards
[CHAPTER XIX]—High Potentials—Air-Gap Arrester—Discharge across Gaps—Types of Arrester—Vacuum Arrester—Strong Currents—Fuses—Sneak Currents—Line Protection—Central-Office and Subscribers' Station Protectors—City Exchange Requirements—Electrolysis