of the book, but merely that it would accept this nominal submission as a sufficient homage to its authority. If this were so, the author was disappointed; the Inquisition took cognizance of the matter, and summoned him to Rome to undergo a personal examination. Age and infirmity were in vain pleaded as excuses; still, through the urgent and indignant remonstrances of the Grand Duke of Tuscany, he was treated with a consideration rarely shown by that stern tribunal. He was allowed to remain at the Florentine ambassador's palace, with the exception of a short period, from his arrival in February, until the passing of sentence, June 21, 1633. He was then condemned, in the presence of the Inquisitors, to curse and abjure the "false doctrines," which his life had been spent in proving, to be confined in the prison of the Holy Office during pleasure, and to recite the seven penitential psalms once a week during three years. The sentence and the abjuration are given at full length in the "Life of Galileo," in the "Library of Useful Knowledge." "It is said," continues the biographer, "that Galileo, as he rose from his knees, stamped on the ground, and whispered to one of his friends, '_e pur si muove_,' it does move though." [Illustration: Galileo before the Inquisition.] Galileo's imprisonment was not long or rigorous, for after four days he was reconducted to the Florentine ambassador's palace; but he was still kept under strict surveillance. In July he was sent to Sienna, where he remained five months in strict seclusion. He obtained permission in December to return to his villa at Arcetri, near Florence: but there, as at Sienna, he was confined to his own premises, and strictly forbidden to receive his friends. It is painful to contemplate the variety of evils which overcast the evening of this great man's life. In addition to a distressing chronic complaint, contracted in youth, he was now suffering under a painful infirmity which by some is said to have been produced by torture, applied in the prisons of the Inquisition to extort a recantation. But the arguments brought forward to show that the Inquisitors did resort to this extremity do not amount to anything like direct proof. In April, 1634, Galileo's afflictions were increased by the death of a favorite, intelligent, and attached daughter. He consoled his solitude, and lightened the hours of sickness, by continuing the observations which he was now forbidden to publish to the world; and the last of his long train of discoveries was the phenomenon known by the name of the moon's libration. In the course of 1636-37 he lost successively the sight of both his eyes. He mentions this calamity in a tone of pious submission, mingled with a not unpleasing pride. "Alas, your dear friend and servant Galileo has become totally and irreparably blind; so that this heaven, this earth, this universe, which with wonderful observations I had enlarged a hundred thousand times beyond