Scientific American Supplement, No. 717, September 28, 1889

Scientific American Supplement, No. 717, published on September 28, 1889, is a collection of articles and reports on various scientific and technological topics from the late 19th century. It covers subjects such as civil engineering, electricity, geology, and naval engineering, reflecting the innovations of the time. The edition includes technical descriptions and illustrations, showcasing practical engineering developments alongside theoretical explorations, like C. V. Boys' lecture on quartz fibers. This publication serves as a historical snapshot of scientific discourse during a period of rapid advancement.