# Scientific American Supplement, No. 664, September 22, 1888

An audiobook by Various, read by LibriVox volunteers (4 h 9 min, English).

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 Iron Sailing Ships, Coal Tar as Fuel for Steam Boilers, Pepsin, A Chinese Imperial Cemetery, and Subterraneous Flora and Fauna. - Summary by Larry Wilson

[Listen](https://invisiblenetwork.ai/books/librivox/21172)
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