Description of the Stone with the Arcanum 18
This stone clearly indicates the Arcanum Eighteen of the Hebraic Kabbalah. The occult forces of nature live in a constant struggle. The repeated ninth sphere gives struggle; it carries us to the regions where the fight between the powers of sex is terrible.
There is a human figure that stands out and who has between his hands a little animal, a little dog with its curled tail, a vibrant representation of the mercury of secret philosophy.
In synthesis, it is telling us that one has to be decisive in order to fight in the ninth sphere, in order to prepare the mercury, even if one has to confront the potencies of darkness, which will attack us incessantly in order to make us fall.
It is necessary to have willpower in order to attain the mercury, no matter what the cost might be.
We see in the first part of the number eight the cross of sacrifice.