"Wrinkles in Electric Lighting" by Vincent Stephen is a technical manual written in the late 19th century. This work addresses engineers, particularly those on ships, who may have no prior electrical knowledge but need to manage electric lighting machinery. The book covers the production of electricity by mechanical means, the functioning of various electric lamps, and practical considerations for maintaining electrical systems onboard ships. The opening of the manual outlines Stephen's intentions for providing clear and accessible insights into electric lighting. He explains how electric currents are produced, comparing their function to the flow of blood in the human body and the circulation in a pipe. Stephen emphasizes the importance of understanding both the strength and volume of electric currents and introduces the basics of magneto-electric and dynamo-electric machines. Overall, this introduction establishes the foundation for a practical guide to managing electric lighting systems effectively, tailored for individuals with limited background in electrical engineering. (This is an automatically generated summary.)