Mercury, or, The secret and swift messenger : Shewing, how a man may with privacy and speed communicate his thoughts to a friend at any distance (1694)
Wilkins, John, 1614-1672 · London, Printed for Richard Baldwin · leaf 117
94 7ke Secret and SwiftBy Mathematical Figures. … By P,wits>Lines.and FiTxres m:x:i together.
Cryptography · Gesture · Sign language
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Henry Cornelius Agrippa's Fourth book of occult philosophy, and geomancy. Magical elements of Peter de Abano. Astronomical geomancy [by Gerardus Cremonensis]. The nature of spirits [by Gorg Pictorius]. And arbatel of magic (1655)](https://img.insideoutlibrary.com/img/200/ia-cu31924006718757-218-30.webp)
