It has been said in the _Doctrine of Transcendental Magic_ that the name Jehovah resolves into seventy-two explicatory names, called _Shemahamphorash_.[70] The art of employing these seventy-two names and discovering therein the keys of universal science is the art which is called by Kabalists the Keys of Solomon. As a fact, at the end of the collections of prayers and evocations which bear this title, there are found usually seventy-two magical circles, making thirty-six talismans, or four times nine, being the absolute number multiplied by the tetrad. Each of these talismans bears two of the two-and-seventy names, the sign emblematical of their number and that of the four letters of Tetragrammaton to which they correspond. From this have originated the four emblematical Tarot suits: the Wand, representing the _Yod_; the Cup, answering to the _He_; the Sword, referable to the _Vau_; and the Pentacle, in correspondence with the final _He_. The complement of the denary has been added in the Tarot, thus repeating synthetically the character of unity.[71] The popular traditions of Magic affirm that he who possesses the Keys of Solomon can communicate with spirits of all grades and can exact obedience on the part of all natural forces. These Keys, so often lost and as often again recovered, are no other than the talismans of the seventy-two names and the mysteries of the thirty-two hieroglyphical paths, reproduced by the Tarot. By the aid of these signs and by their infinite combinations, which are like those of numbers and letters, it is possible to arrive at the natural and mathematical revelation of all secrets of Nature, and it is in this sense that communication is established with the whole hierarchy of intelligence.