Scientific American Supplement, No. 601, July 9, 1887

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The Scientific American may be the oldest continuously published periodical in the United States, having 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 torpedo boats, engineering updates, sponges, and a long article on bricks and brickwork, and much more. - Summary by Larry Wilson (3 hr 50 min)