Galilei is not to hear of Scheiner's work concerning the sunspots. The inventory of Leopold's library contains works by Tycho Brahe and Galileo Galilei: Leopold lead a friendly correspondence with Galilei. On 23 May 1618, Leopold received telescopes from Galilei, along with a treatise on the sunspots, the Discorso del Flusso e Reflusso del Mare. Scheiner was the builder of the new Jesuit church in Innsbruck. Craftsmen began to work on the roof in July 1624, but September saw a sudden collapse of the middle part of the gallery and the sidewall facing the street. According to a new decision, the church had to be turned by 90° and be reconstructed. Freiburg University was facing a decline at the beginning of the 17th century. It was on 16 November 1620, that Archduke Leopold summoned the Jesuit Fathers, first of all, the "most excellent by far" Christoph Scheiner. In the spring of 1621, Scheiner was recalled for reasons confirmed to be unknown: in fact it was Archduke Karl's wish to have Scheiner as his father confessor. Archduke Karl had travelled with Scheiner from Brixen to Vienna, from where he did not return to Neisse until sometime between 1621 and 1622. In February 1623, Scheiner was appointed Superior of the future college. Then the Spanish King Philipp IV chose Karl of Austria for the office of a vice-king of Portugal. Archduke Karl travelled to Madrid. Scheiner had to travel to Rome, to instigate the foundation of the new college in Neisse. Scheiner stayed in Rome longer than his duty required. In Rosa Ursina sive Sol, he wrote that he had been sent to Rome "ad summum pontificem, ob certa peragenda negotia" (Latin meaning "to the pontifical summons..."). Other theories, contending that Scheiner had been summoned to Rome as an expert astronomer because of Galilei, or that he felt his transfer to Neisse was a punishment, have not been confirmed. It was only 13 years later, that he returned to Neisse via Vienna, where he stayed for some time. Rome: 1624–1633 When Scheiner went to Rome in 1624, friends asked him to write about his solar observations. At last he had time for mathematical books, among them Galilei’s Il saggiatore, which contains Galileo's work on sunspots. This was similar to Scheiner's own work (unsurprisingly, since both were observing at the same time) but led to allegations from both of plagiarism by the other,