philosophy, though he has not produced the branches, flowers, and fruit because of his youth, and because he has had no experience in teaching. But he has the means of surpassing all the Latins if he live to grow old and goes on as he has begun." The pride with which he refers to his system of instruction was justified by the wide extension which he gave to scientific teaching in Oxford. It is probably of himself that he speaks when he tells us that "the science of optics has not hitherto been lectured on at Paris or elsewhere among the Latins, save twice at Oxford." It was a science on which he had laboured for ten years. But his teaching seems to have fallen on a barren soil. From the moment when the Friars settled in the Universities scholasticism absorbed the whole mental energy of the student world. The temper of the age was against scientific or philosophical studies. The older enthusiasm for knowledge was dying down; the study of law was the one source of promotion, whether in Church or state; philosophy was discredited, literature in its purer forms became almost extinct. After forty years of incessant study, Bacon found himself in his own words "unheard, forgotten, buried." He seems at one time to have been wealthy, but his wealth was gone. "During the twenty years that I have specially laboured in the attainment of wisdom, abandoning the path of common men, I have spent on these pursuits more than two thousand pounds, not to mention the cost of books, experiments, instruments, tables, the acquisition of languages, and the like. Add to all this the sacrifices I have made to procure the friendship of the wise and to obtain well-instructed assistants." Ruined and baffled in his hopes, Bacon listened to the counsels of his friend Grosseteste and renounced the world. He became a friar of the order of St. Francis, an order where books and study were looked upon as hindrances to the work which it had specially undertaken, that of preaching among the masses of the poor. He had written little. So far was he from attempting to write that his new superiors prohibited him from publishing anything under pain of forfeiture of the book and penance of bread and water. But we can see the craving of his mind, the passionate instinct of creation which marks the man of genius, in the joy with which he seized a strange opportunity that suddenly opened before him. "Some few chapters on different subjects, written at the entreaty of friends," seem to have got abroad, and were brought by one of the Pope's chaplains under the notice of Clement the Fourth. The Pope at once invited Bacon to write. But difficulties stood in his way. Materials, transcription, and other expenses for such a work as he projected would cost at least, L60, and the Pope sent not a penny. Bacon begged help from his family, but they were ruined like himself. No one would lend to a mendicant friar, and when his friends