doctrinal series. Catholicism has been able to some extent to escape this difficulty, since theological labour is regarded in that Church as a sort of continuous revelation, or at least as an organic and legitimate process of development. Protestantism, on the contrary, which has accepted a large part of the results of this development, without according to it the same character, has voluntarily closed its eyes to the distance which separates the two ends of the chain. A century ago men ignored,