This semi-popular work was one of the first scientific studies of sleep. It was also the first book typeset by a mechanical typesetting machine, rather than hand-set type. Digital facsimile from Google Books at this l…
This semi-popular work was one of the first scientific studies of sleep. It was also the first book typeset by a mechanical typesetting machine, rather than hand-set type. Digital facsimile from Google Books at this l…
