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 death. Tycho hurried home to Copenhagen, but he did not stay long. He returned to Germany and continued his studies at Wittenberg, the home of the great Reformer Luther, who had been dead only about twenty years. He seems to have had no desire to go home, for he settled down at Rostock and then at Augsburg, where he was fortunate enough to find many scientific men with whom he could associate and exchange ideas. Here it was that he invented and constructed some remarkable astronomical instruments, one of which was that enormous globe you saw in his library. It was four feet in diameter, and covered with a coating of brass on which was engraved a representation of the heavens founded on his own observations.

Otto Brahe, who was governor of Helsingborg Castle, died in 1570, and Tycho returned to Denmark to arrange his father's affairs. Another uncle placed his house at the disposal of his remarkable young nephew, and soon Tycho was eagerly watching his new star, about which he wrote a book in Latin. There was some difficulty about publishing the book, because it was supposed to be beneath the dignity of a nobleman to demean himself by writing books. However, by the assistance of friends, it was published and added very much to his reputation. This was an age when nobles and aristocrats had great power and dominated the country. Like nobles in all ages, physical work in time of peace or mental work of any