Complex sentence: The first debates were held in the reading rooms of Hatfield Hall and UniversityCollege, but in 1872 the Society moved to what is now the Palace Green library, where the University's first purpose-built debating chamber was established.
Split into simpler sentences: The first debates were held in the reading rooms of Hatfield Hall and University College. In 1872 the Society moved to what is now the Palace Green library, where the University's first purpose-built debating chamber was established.