They appear to have a close connection with the Alchemists; springing into existence as a distinct body when those enthusiastic seekers after the power of transmuting the baser into the nobler metals were creating unusual sensation. Somewhere about the end of the fifteenth century, a Dutch pilot named Haussen, had the misfortune to be shipwrecked off the coast of Scotland. The vessel was lost, but Haussen was saved by a Scotch gentleman, one Alexander Seton, who put off in a boat and brought the drowning mariner to land. A warm friendship sprang up between the two, and, about eighteen months after, Seton went to Holland, and paid a visit to the man whom he had rescued. During this visit he informed the Dutchman that he was in possession of the secret of the philosopher's stone, and report says that in his presence he actually transmuted large quantities of base metal into the finest gold, which he left with him as a present. Seton in due course took leave of his friend, and prosecuted his travels through various parts of the continent. He made no attempt to conceal the possession of his boasted secret, but openly talked of it wherever he went and performed certain experiments, which he persuaded the people were actual transmutations of base metal into gold. Unfortunately for him, the Duke of Saxony heard the report of these wonders, and immediately had him arrested and put to the torture of the rack to extract from him the precious secret, or to compel him at least to use it in his especial service. All was in vain, however, the secret, if such he really possessed, remained locked up in his own breast, and he lay for months in prison subjected to treatment which reduced him to mere skin and bone, and well nigh killed him. A Pole, named Sendivogius, also an alchemist, an enthusiast like the rest of the fraternity, who had spent time and fortune in the wild and profitless search, then came upon the scene. The sufferings of Seton aroused his sympathy, and he resolved to bring about, if possible, his escape from the tyrant. After experiencing a deal of difficulty he obtained permission to visit the prisoner, whom he found in a dark and filthy dungeon, in a condition well nigh verging upon absolute starvation. He immediately acquainted the unhappy man with his proposals, which were listened to with the greatest eagerness, and Seton declared that, if he succeeded in securing his liberation, he would make him one of the wealthiest of living men. Sendivogius then set about his really difficult task; and, with a view to its accomplishment, commenced a curious and artful series of movements. His first move was to procure some ready money, which he did by the sale of some property near Cracow. With this he began to lead a gay and somewhat dissipated life at Dresden; giving splendid banquets, to which he invited the officers of the guard, particularly selecting those who were on duty at the prison. In the course of time his hospitality had its expected effect; he entirely won the confidence of the officials, and pretending that he was endeavouring to overcome the obstinacy of the captive, and worm out his secret, was allowed free access to him. It was at last resolved upon a certain day to make the attempt at escape; and, having sent the guard to sleep by means of some drugged wine, he assisted Seton over a wall, and led him to a post-chaise, which he had conveniently waiting, to convey him into Poland. In the vehicle Seton found his wife awaiting him, having with her a packet of black powder, which was said to be the philosopher's stone by which iron and copper could be transmuted into gold. They all reached Cracow in safety, but Seton's sufferings had been so severe, and had so reduced his physical strength, that he did not survive many months. He died about 1603 or 1604, leaving behind him a number of works marked Cosmopolite. Soon after his death Sendivogius married the widow; and, according to the accounts which have come down to us, was soon initiated into the methods of turning the commoner metals into the finer. With the black powder, we are told, he converted great quantities of quicksilver into the purest gold, and that he did this in the presence of the Emperor Rudolph II. at Prague, who, in commemoration of the fact, caused a marble tablet with an inscription to be fixed in the wall of the room where the experiment was performed. Whether the experiment was a cheat or not, the tablet was really fixed in the said wall, and was seen and described by Desnoyens, secretary to the Princess Mary of Gonzaga, Queen of Poland, in 1651.