Let it, therefore, be of a black or dark colour; and let them never, under the pretext of travelling, return to the ignominy of the secular dress, from which they have been set free. We commend the kind of dress which, a few years ago, the secular clergy began to wear. At home, however, it is above all fitting that they should wear the cassock, or, if they will, what is called the zimarra and biretta.
"But inasmuch as the peculiar (proper) mark of the Catholic clergy in all the world is what is commonly called the Roman collar, which already among us is recognised as such by Protestants, without provoking contumely or offence, we will that all priests should wear it in the exercise of their sacred ministry, unless, perchance, for a time, at the discretion of the Bishops, by reason of circumstances, it be otherwise ordered."
13. "To these decrees, this Fourth Synod judges it expedient in the Lord that certain additions be made. We order, therefore, that every priest shall wear the Roman collar not only when he exercises the sacred ministry, but at all times, so that he may be known by all to be a priest. We decree also that the usage of Rome be observed by all ecclesiastics—that is, of not wearing the hair either on the cheeks nor as a beard."
