Of Those Who Can Excommunicate or Be Excommunicated

We must now consider those who can excommunicate or be excommunicated. Under this head there are six points of inquiry:(1) Whether every priest can excommunicate?(2) Whether one who is not a priest can excommunicate?(3) Whether one who is excommunicated or suspended, can excommunicate?(4) Whether anyone can excommunicate himself, or an equal, or a superior?(5) Whether a multitude can be excommunicated?(6) Whether one who is already excommunicated can be excommunicated again?

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Whether every priest can excommunicate?
Whether those who are not priests can excommunicate?
Whether a man who is excommunicated or suspended can excommunicate another?
Whether a man can excommunicate himself, his equal, or his superior?
Whether a sentence of excommunication can be passed on a body of men?
Whether a man can be excommunicated who is already under sentence of excommunication?