Elaborate preparations are necessary, and each of the numerous items used in the operator's "experiments" must be constructed of the appropriate materials obtained in the prescribed manner, at the appropriate astrological time, marked with a specific set of magical symbols, and blessed with its own specific words. All substances needed for the magic drawings and amulets are detailed, as well as the means to purify and prepare them. Many of the symbols incorporate the Transitus Fluvii occult alphabet.