Scientific American Supplement, No. 299, September 24, 1881

Published on September 24, 1881, the Scientific American Supplement No. 299 is a periodical that features a variety of scientific and technological topics from the late 19th century. It covers advancements in engineering, electricity, medicine, agriculture, and includes notable obituaries, reflecting the industrial progress of the time. This edition highlights significant innovations such as marine engines, electric lighting in mining, and improvements in lead processes, showcasing the breadth of scientific inquiry and technological advancements during this era.