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The principal Authors on alchymy are Geber, the Arab, Friar Bacon, Sully, John and Isaac Hallendus, Basil Valentine, Paracelsus, Van Zuchter, and Sendirogius. Corringius calls this statement in question, and asks how Suidas, who lived but five hundred yours between them, should know what happened eight hundred years before him?
Among the Saracen names that might be mentioned as cultivators of alchemy, we may recall El-Rasi, Ebid Durr, Djafar or Geber, Toghragé, who wrote an alchemical poem, and Dschildegi, one of whose works bears the significant title of "The Lantern." The definition of alchemy by some of these authors is very striking: the science of the balance, the science of weight, the science of combustion.
This passage, some authors suppose, to have given the first hint of the matter, though Geber himself, perhaps, meant no such thing; for, by attending to the Arabic style and diction of this author, which abounds in allegory, it is highly probable that by man he means gold, and by leprous, or other diseases, the other metals, which, with relation to gold, are all impure.
Turning from physics to chemistry, we find as perhaps the greatest Arabian name that of Geber, who taught in the College of Seville in the first half of the eighth century. The most important researches of this really remarkable experimenter had to do with the acids. The ancient world had had no knowledge of any acid more powerful than acetic.
The names of Mesua and Geber, of Razis and Avicenna, are ranked with the Grecian masters; in the city of Bagdad, eight hundred and sixty physicians were licensed to exercise their lucrative profession: in Spain, the life of the Catholic princes was intrusted to the skill of the Saracens, and the school of Salerno, their legitimate offspring, revived in Italy and Europe the precepts of the healing art.
For four years he worked in his laboratory, with the book of Rhazes continually before him. At the end of that time, he found that he had spent no less than eight hundred crowns upon his experiment, and had got nothing but fire and smoke for his pains. He now began to lose confidence in Rhazes, and turned to the works of Geber.
It is well known however how eagerly it was cultivated in various countries of the world for many centuries after it was divulged by Geber. Men of the most wonderful talents devoted their lives to the investigation; and in multiplied instances the discovery was said to have been completed.
This was Raymond Lulli, a name which stands in the first rank among the alchymists. Unlike many of his predecessors, he made no pretensions to astrology or necromancy; but, taking Geber for his model, studied intently the nature and composition of metals, without reference to charms, incantations, or any foolish ceremonies.
Some of the mediæval adepts spoke of him as the King of India, others called him a Prince of Persia. Most of the Arabian writers on alchemy and medicine, after the 9th century, refer to Geber as their master. All the MSS. of writings attributed to Geber which have been examined are in Latin, but the library of Leyden is said to possess some works by him written in Arabic.
The preface is dated eight years previously, from the house of the alchymist, "at the Star, in Newmarket, in Wapping, near the Dock." For more than two hundred years after the death of Geber, the Arabian philosophers devoted themselves to the study of alchymy, joining with it that of astrology. Of these the most celebrated was
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