Scientific American Supplement, No. 288, July 9, 1881
The Scientific American may be the oldest continuously published periodical in the United States, havinge launched its first publication in 1845. It has been a mainstay of popular science with in depth articles across a broad spectrum of scientific fields. In this supplement are short articles ranging through such topics as Seyfferth's Pyrometer, Organic Matter in Sea-Water, On the Composition of Elephants' Milk, and Economy of the Electric Light. - Summary by Larry Wilson