A study of the Inquisition in Catalonia, its organization and activities, with statistical information. Pt. I (p. 13-59), "Una problemática latente: Los judíos", relates the evolution of the anti-Jewish campaign in Spain (and Catalonia), beginning with the wave of pogroms of 1348 and 1391. The medieval Inquisition being inefficient, the modern Inquisition was introduced in Catalonia, despite opposition, between 1483-87, leading to a wave of denunciations and accusations of Judaizing. Explains the popular hostility against Conversos by envy and resentment against them, and the common belief that Converso equals Judaizer. States that the "extermination of the Judaizers" continued until 1505 with more than 1,200 trials, with a few reprisals against Portuguese Conversos after 1580.