distinguished himself by his extraordinary memory. He learned everything to which he applied himself with the utmost ease. In the most voluminous works no fact was too minute for his retention, and no study was so abstruse but that he could master it; but any advantages he might have derived from this facility, were neutralized by his ungovernable passions and his love of turmoil and debauchery. He was involved in continual difficulty, as well with the heads of the college as with the police of Rome, and acquired so bad a character that years could not remove it. By the aid of his friends he established himself as a physician in Rome, and also obtained some situation in the Pope’s household. In one of his fits of studiousness he grew enamoured of alchymy, and determined to devote his energies to the discovery of the philosopher’s stone. Of unfortunate propensities he had quite sufficient, besides this, to bring him to poverty. His pleasures were as expensive as his studies, and both were of a nature to destroy his health and ruin his fair fame. At the age of thirty-seven he found that he could not live by the practice of medicine, and began to look about for some other employment. He became, in 1653, private secretary to the Marquis di Mirogli, the minister of the Archduke of Innspruk at the court of Rome. He continued in this capacity for two years; leading, however, the same abandoned life as heretofore, frequenting the society of gamesters, debauchees, and loose women, involving himself in disgraceful street quarrels, and alienating the patrons who were desirous to befriend him.

All at once a sudden change was observed in his conduct. The abandoned rake put on the outward sedateness of a philosopher; the scoffing sinner proclaimed that he had forsaken his evil ways, and would live thenceforth a model of virtue. To his friends this reformation was as pleasing as it was unexpected; and Borri gave obscure hints that it had been brought about by some miraculous manifestation of a superior power. He pretended that he held converse with beneficent spirits; that the secrets of God and nature were revealed to him; and that he had obtained possession of the philosopher’s stone. Like his predecessor, Jacob Böhmen, he mixed up religious questions with his philosophical jargon, and took measures for declaring himself the founder of a new sect. This, at Rome itself, and in the very palace of the Pope, was a hazardous proceeding; and Borri just awoke to a sense of it in time to save himself from the dungeons of the Castle of St. Angelo. He fled to Innspruck, where he remained about a year, and then returned to his native city of Milan.

The reputation of his great sanctity had gone before him; and he found many persons ready to attach themselves to his fortunes. All who were desirous of entering into the new communion took an oath of poverty, and relinquished their possessions for the general good of the fraternity. Borri told them that he had received from the archangel Michael a heavenly sword, upon the hilt of which were engraven the names of the seven celestial Intelligences. “Whoever shall refuse,” said he, “to enter into my new sheepfold, shall be destroyed by the papal armies, of whom God has predestined me to be the chief. To those who follow me, all joy shall be granted. I shall soon bring my chemical studies to a happy conclusion by the discovery of the philosopher’s stone, and by this means we shall all have as much gold as we desire. I am assured of the aid of the angelic hosts, and more especially of the archangel Michael’s. When I began to walk in the way of the spirit, I had a vision of the night, and was assured by an angelic voice that I should become a prophet. In sign of it I saw a palm-tree, surrounded with all the glory of Paradise. The angels come to me whenever I call, and reveal to me all the secrets of the universe. The sylphs and elementary spirits obey me, and fly to the uttermost ends of the world to serve me, and those whom I delight to honour.” By force of continually repeating such stories as these, Borri soon found himself at the head of a very considerable number of adherents. As he figures in these pages as an alchymist, and not as a religious sectarian, it will be unnecessary to repeat the doctrines which he taught with regard to some of the dogmas of the Church of Rome, and which exposed him to the fierce resentment of the papal authority. They were to the full as ridiculous as his philosophical pretensions. As the number of his followers increased, he appears to have cherished the idea of becoming one day a new Mahomet, and of founding, in his native city of Milan, a monarchy and religion of which he should be the king and the prophet. He had taken measures, in the year 1658, for seizing the guards at all the gates of that city, and formally declaring himself the monarch of the Milanese. Just as he thought the plan ripe for execution, it was discovered. Twenty of his followers were arrested, and he himself managed, with the utmost difficulty, to escape to the neutral territory of Switzerland, where the papal displeasure could not reach him.