Scientific American Supplement, No. 288, July 9, 1881

The 'Scientific American Supplement, No. 288,' published on July 9, 1881, is part of the oldest continuously published periodical in the United States, which began in 1845. This issue features a collection of short articles covering diverse scientific topics, including Seyfferth's Pyrometer, organic matter in sea-water, the composition of elephants' milk, and the economy of electric light. The supplement reflects the period's commitment to popular science and the dissemination of scientific knowledge to a broad audience.