Note 366 — BOOK IV.
John Sharpe translation
The Ambrosian ritual prevailed pretty generally till the time of Charlemagne, who adopted the Gregorian. Durandus (lib. v. c. 1) has a curious account of an experiment, on the result of which was founded the general reception of the latter, and the confining the former chiefly to Milan, the church of St. Ambrose.