The visions seen in crystal gazing were often supposed to be the work of evil spirits, seeking to seduce the souls of men by offering the promise of riches or by according them an unlawful glimpse into the future. Here, as in other magical operations, there was both white and black magic, recourse being had in some cases to good, and in others to evil spirits. As an illustration of the latter practice, a sixteenth century writer relates that in the city of Nuremberg, some time during the year 1530, a “demon” showed to a priest, in a crystal, the vision of a buried treasure. Believing in the truth of this vision, the priest went to the spot indicated, where he found an excavation in the form of a cavern, in the depths of which he could see a chest and a black dog lying alongside it. Eagerly the priest entered the cavern, hoping to possess himself of the treasure, but the top of the excavation caved in and he was crushed to death.[287]

The famous charlatan, Dr. Dee, who was for a time a prominent figure at the court of Emperor Rudolph II, was highly favored by Queen Elizabeth. The queen visited him several times, and even appears to have consulted him on political matters. In his diary the doctor relates that the queen called at his house shortly after his wife’s death, which took place March 16, 1575. Of this visit he gives the following details:

The Queen’s Majestie, with her most honorable Privy Council, and other the Lords and Nobility, came purposely to have visited my library: but finding that my wife was within four hours before buried out of the house, her Majestie refused to come in; but willed to fetch my glass so famous, and to show unto her some of the properties of it, which I did. Her Majestie being taken down from her horse by the Earle of Liecester, Master of the Horse, at the church wall of Mortlake, did see some of the properties of that glass, to her Majestie’s great contentment and delight.[288]

It was at Mortlake, on December 22, 1581, that Dr. Dee made his first essay with his crystal ball. The proceedings were conducted with a certain religious ceremonial, and began with a pious invocation to the angel of the stone. This celestial being soon graciously deigned to manifest himself in the stone and—presumably by the voice of the scryer—answered the questions put by those present.

There can be little doubt that Dee used more than one crystal in the course of his experiments; that now in the British Museum is of cairngorm, or “smoky-quartz.” This variety of quartz may have been chosen because of the Scotch superstitions regarding its virtues; for, as a rule, charlatans seek to avail themselves of already existing superstitions in order to make their innovations more acceptable.

DR. DEE’S SHEW STONE.

Natural size. British Museum. This sphere of smoky-quartz came to the British Museum in 1700 with the Cottonian Library, donated at that time by the grandson of the original collector, Sir Robert Bruce Cotton (1571-1631).