I took care to purge her slightly; I prescribed every day what she was to eat, and forbade the use of all cosmetics; I only advised her to wash herself morning and evening with plantain water. The modest oracle told the princess to make use of the same water for her ablutions of every part of her body where she desired to obtain the same result, and she obeyed the prescription religiously. I went to the opera on purpose on the day when the duchess shewed herself there with a smooth and rosy skin. After the opera, she took a walk in the great alley of the Palais-Royal, followed by the ladies of her suite and flattered by everybody. She saw me, and honoured me with a smile. I was truly happy. Camille, Madame de Polignac, and M. de Melfort were the only persons who knew that I was the oracle of the duchess, and I enjoyed my success. But the next day a few pimples reappeared on her beautiful complexion, and I received an order to repair at once to the Palais-Royal. The valet, who did not know me, shewed me into a delightful boudoir near a closet in which there was a bath. The duchess came in; she looked sad, for she had several small pimples on the forehead and the chin. She held in her hand a question for the oracle, and as it was only a short one I thought it would give her the pleasure of finding the answer by herself. The numbers translated by the princess reproached her with having transgressed the regimen prescribed; she confessed to having drunk some liquors and eaten some ham; but she was astounded at having found that answer herself, and she could not understand how such an answer could result from an agglomeration of numbers. At that moment, one of her women came in to whisper a few words to her; she told her to wait outside, and turning towards me, she said, “Have you any objection to seeing one of your friends who is as delicate as discreet?” With these words, she hastily concealed in her pocket all the papers which did not relate to her disease; then she called out. A man entered the room, whom I took for a stableboy; it was M. de Melfort. “See,” said the princess to him, “M. Casanova has taught me the cabalistic science.” And she shewed him the answer she had obtained herself. The count could not believe it. “Well,” said the duchess to me, “we must convince him. What shall I ask?” “Anything your highness chooses.” She considered for one instant, and, drawing from her pocket a small ivory box, she wrote, “Tell me why this pomatum has no longer any effect” She formed the pyramid, the columns, and the key, as I had taught her, and as she was ready to get the answer, I told her how to make the additions and subtractions which seem to come from the numbers, but which in reality are only arbitrary; then I told her to interpret the numbers in letters, and I left the room under some pretext. I came back when I thought that she had completed her translation, and I found her wrapped in amazement.