"Scientific American Supplement, No. 586, March 26, 1887" by Various is a scientific publication produced during the late 19th century, specifically in the Victorian era. This volume is part of a series that compiles various articles and studies related to advancements in fields such as engineering, chemistry, electricity, metallurgy, and more, reflecting the scientific curiosity and innovation of the time. The opening portion of the supplement provides an overview of its contents, revealing topics such as the biography of George W. Whistler, a prominent railroad engineer, and various articles on subjects like newly discovered substances in urine, advancements in electro-dissolution methods, and innovations in gas engines for railroads. The initial sections highlight significant engineering projects, including the design of the Retiro Viaduct in Brazil and discussions on the efficacy and development of sea-going torpedo boats. Overall, the beginning of this supplement sets the stage for an in-depth exploration of contemporary scientific and engineering challenges, showcasing the breadth of knowledge being shared in the late 1800s. (This is an automatically generated summary.)