HYPATIA, THE MAIDEN PHILOSOPHER. 363 archbishop who succeeded Theophilus, was still more of a fanatic. Riots broke out between the three parties into which the city was divided, Christians, Heathens, and Jews; conflicts took place in the streets; finally, into the disordered city flocked five hundred of the monks of Nitria, wild and ignorant desert dwellers, who needed only a hint to commit any excesses against those accused of teaching non- Christian doctrines. All we have here said is preliminary to the story of one of the most interesting of the philosophical teachers of the past, Hypatia of Alexandria, the tragedy of whose death marked the turning-point between the reigns of learning and ignorance. With Hypatia fell philosophy, not to rise again for more than a thousand years. In those days Alexandria possessed a famous mathematician named Theon. To him, in the latter part of the fourth century of the Christian era, was born Hypatia, who was destined to surpass her father in the study of science and philosophy. Taught by himself, she became an ardent student, often pursuing her studies late into the night, and absorbing not only the mathematical lore of her father, but the philosophy of Plato and Aristotle and the then popular doctrines of Neoplatonism, which became her favorite tenets of philosophy. Her studies were not confined to Alexandria, but she travelled abroad, and in the still famous schools of Athens attended the lectures of the most distin- guished teachers of philosophy. Back to Alexandria, with the wisdom she had