How are the Examining Magistrate’s books described in “In the Empty Conference Hall – The Student – The Offices”? What happens to the Usher’s Wife in the chapter?

K. examines the books left on the table, only to find that they are pornography. The Usher's wife tells him about the Examining Magistrate, but Bertold enters and carries her off. They disappear up a stairway that has a childishly written sign by it saying “Court Offices.”