“The Magus, or Celestial Intelligencer is a handbook of the occult and ceremonial magic compiled by Francis Barrett and published in 1801. Francis Barrett (born probably in London around 1770-1780) was an English occultist.“Barrett claimed himself to be a student of chemistry, metaphysics, and natural occult philosophy. He was known to be an extreme eccentric who gave lessons in the magical arts in his apartment and fastidiously translated Kabbalistic and other ancient texts into English.”