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 establishment of the Chinese dynasties. To him is also attributed the invention of the plough.

The Emperor Adrian, whose curiosity and literary tastes led him to the study of astrology, magic, and medicine, composed an antidote which was known as Adrianum, and which consisted of more than forty ingredients, of which opium, henbane, and euphorbium were the principal.

Attalus III, the last king of Pergamos in Asia Minor, who died about 134, bequeathing his kingdom to the Romans who already controlled it, was a worthless and cruel prince, but of some reputation in pharmacy. Having poisoned his uncle, the reigning king, Attalus soon wearied of public affairs, and devoted his time to gardening, and especially to the cultivation of poisonous and medicinal plants. Plutarch expressly mentions henbane, hellebore, hemlock, and lotus as among the herbs which he studied, and Justin reports that he amused himself by sending to his friends presents of fruits, mixing poisonous ones with the others. He is credited with the invention of our white lead ointment and Celsus and Galen mention a plaster and an antidote as among his achievements. Marcellus has preserved a prescription which he says Attalus devised for diseases of the liver and spleen, for dropsy, and for improving a lurid complexion. It consisted of saffron, Indian nard, cassia, cinnamon, myrrh, schœnanthus, and costus, made into an electuary with honey, and kept in a silver box.

Gentius, King of Illyria, discovered the medicinal value of the gentian and introduced it into medical practice. The plant is supposed to have acquired its name from this king. Gentius was induced by Perseus, King of Macedon, to declare war against the Romans, Perseus promising to support him with money and