It does not appear at what time Copernicus entered into holy orders: probably it may have been during his residence at Rome; for on his return home he was named to the superintendence of the principal church in his native city Thorn. Not long afterwards his uncle Luke, who, in 1489, succeeded Nicolas von Thungen in the bishopric of Ermeland, enrolled him as one of the canons of his chapter. The cathedral church of the diocese of Ermeland is situated at Frauenburg, a small town built near one of the mouths of the Vistula, on the shore of the lake called Frische Haff, separated only by a narrow strip of land from the Gulf of Dantzig. In this situation, rendered unfavourable to astronomical observations by the frequent marshy exhalations rising from the river and lake, Copernicus took up his future abode, and made it the principal place of his residence during the remainder of his life. Here those astronomical speculations were renewed and perfected, the results of which have for ever consigned to oblivion the subtle contrivances invented by his predecessors to account for the anomalies of their own complicated theories. But we should form a very erroneous opinion of the life and character of Copernicus, if we considered him, as it is probable that by most he is considered, the quiet inhabitant of a cloister, immersed solely in speculative inquiries. His disposition did not unfit him for taking an active share in the stirring events which were occurring around him, and it was not left entirely to his choice whether he would remain a mere spectator of them.