An essay upon that paradox, Infallibility may sometimes mistake. or, A reply to A discourse concerning episcopacy, said in a late pamphlet to be beyond the possibility of a reply : To which is prefixed, some remarks upon said pamphlet, entituled, A discourse shewing, who is a true pastor of the church of Christ. As also remarks upon St. Ignatius's Epistle to the Trallians. By a son of Martin-Mar-Prelate. [Two lines of quotation in Latin].