factors contributed: the greater splendor of the Christian capitol, and the Roman’s native sense of order. The effect was not only to fix forms, but to fix them in such wise that they were regulated for the whole course of the year—per circulum anni, as the caption puts it. With this we come to the books of the Roman Mass over which we will tarry long enough to get to understand the references made to them in our later elucidations.42 What we get to know from