Title: Syllabus complectens praecipuos nostrae aetatis errores qui notantur in allocutionibus consistorialibus, in encyclicis aliisque apostolicis litteris sanctissimi domini nostri Pii Papae IX
Subjects: Catholic Church, Catholic Theology, Christian Heresies, Pastoral letters and charges, Doctrines, Christian heresies, Hérésies chrétiennes, Église catholique, Mandements et lettres pastorales