Page:Memoirs of Extraordinary Popular Delusions and the Madness of Crowds Vol 1.djvu/113

Rh from the sound of his name, that he was a German, and rendered it as the "Donnateur," or Giver. No details of his life are known; but it is asserted, that he wrote more than five hundred works upon the philosopher's stone and the water of life. He was a great enthusiast in his art, and compared the incredulous to little children shut up in a narrow room, without windows or aperture, who, because they saw nothing beyond, denied the existence of the great globe itself. He thought that a preparation of gold would cure all maladies, not only in man, but in the inferior animals and plants. He also imagined that all the metals laboured under disease, with the exception of gold, which was the only one in perfect health. He affirmed, that the secret of the philosopher's stone had been more than once discovered; but that the ancient and wise men who had hit upon it would never, by word or writing, communicate it to men, because of their unworthiness and incredulity. But the life of Geber, though spent in the pursuit of this vain chimera, was not altogether useless. He stumbled upon discoveries which he did not seek; and science is indebted to him for the first mention of corrosive sublimate, the red oxide of mercury, nitric acid, and the nitrate of silver.

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

Alfarabi flourished at the commencement of the tenth century, and enjoyed the reputation of being one of the most learned men of his age. He spent his life in travelling from country to country, that he might gather the opinions of philosophers upon the great secrets of nature. No danger dismayed him; no toil wearied him of the pursuit. Many sovereigns endeavoured to retain him at their courts; but he refused to rest until he had discovered the great object of his life—the art of preserving it for centuries, and of making gold as much as he needed. This wandering mode of life at last proved fatal to him. He had been on a visit to Mecca, not so much for religious as for philosophical purposes, when, returning through Syria, he stopped at the court of the Sultan Seifeddoulet, who was