Originally published in London by Offices of Engineering in 1882.

Preface -- Part I: 1. Electrical units -- 2. The measurement of electrical intensity -- 3. The voltaic arc -- 4. The mechanical production of electric currents -- 5. The theory of dynamo-electric generators -- Part II: 1. Magneto and dynamo-electric generators -- Part III: 1. Conductors -- 2. Carbons -- 3. Arc lamps -- 4. The Jablochkoff candle -- 5. Incandescence-arc lamps -- 6. Incandescence lamps -- Index -- Appendix.

Two years after Thomas Edison patented his electric light bulb, the 1881 International Exposition of Electricity in Paris, featuring many spectacular lighting displays, showcased the potential of this technology for commercial and domestic use. The accompanying International Congress of Electricians also agreed on international standards for units of electrical resistance, potential and current. In its wake, James Dredge (1840-1906), editor of the British periodical Engineering, compiled this illustrated overview of electrical technology and its application to lighting. First published in two volumes between 1882 and 1885, and using material that had previously appeared in Engineering, as well as new articles by various contributors, this substantial work reflects the complexities and possibilities of a propitious technological development. Among other topics, Volume 1 covers electrical units, methods of generation, conductors, and various kinds of lamp. The appendices give abstracts of British electrical patents from 1837 to 1872.