Many volumes have been published under this title purporting
to reveal an infallible method of attaining success in a lottery.
La Clef dor, or La Véritable trésor de la fortune (1810), reEncyclopedia
of Occultism & Parapsychology 5th Ed. Golden Key
printed from time to time at Lille, Belgium, is based on the
doctrine of sympathetic numbers, which the anonymous author
claims to have discovered from study of the works of Cagliostro,
Cornelius Agrippa, and others. Each number drawn, he
declares, has five sympathetic numbers that directly follow it.
For example, the number 4 has for its sympathetic numbers 30,
40, 50, 20, and 76. With this knowledge it is claimed to be an
easy matter to win a lottery