Abstract
This paper addresses the second and third volumes of Edward Bouverie Pusey's Eirenicon, which were published as open letters to John Henry Newman. Written in the run up to the First Vatican Council in 1870, these books discuss respectively the Marian dogmas and infallibility. Like the first volume they reveal the profound difference between Pusey's Anglo-Catholicism, which was a ‘catholicism of the word’ defined by the explicit doctrinal formulations of the undivided church, and Newman's Roman Catholicism with its emphasis on the doctrine of development. Compared to the first volume, which provoked significant discussion, the impact of the second and third volumes was modest primarily because the declaration of infallibility meant that ecumenical discussion no longer seemed possible. Pusey's hopes for reunion were completely dashed and he removed himself from ecumenical discussion permanently.