Sleep and the Theories of Its Causes
The Scientific American Supplement is back again, this time from 1898, with an article offering various theories on the causes of sleep. \nRead along at https://www.gutenberg.org/files/18265/18265-h/18265-h.htm#art08.\nWith host Mike Shafer. \nIf you like the show, please subscribe, review, share, and send over requests for other product manuals to:\nFacebook\nTwitter\nInstagram