Certamen religiosum: or A dispute, manag'd by writing, between a papist and a Protestant : Where in the papist's propositions are first set down, with the Protestant's answer; and then follows the papist's reply, and the Protestant's rejoinder. With a preface, concerning the occasion of the dispute; and a large letter of Mr. Chillingworth, never before printed, shewing his reasons why he deserted the Church of Rome.