In 1684 he published a translation of M. Maimbourg's. History of the League, in which he was employed by the command of King Charles II. on account of the plain parallel between the troubles of France, and those of Great Britain. Upon the death of Charles II. he wrote his Threnodia Augustalis, a Poem, sacred to the happy memory of that Prince. Soon after the accession of James II. our author turned Roman Catholic, and by this extraordinary step drew upon himself abundance of ridicule from wits of the opposite faction; and in 1689 he wrote a Defence of the Papers, written by the late King of blessed memory, found in his strong box. Mr. Dryden, in the abovementioned piece, takes occasion to vindicate the authority of the Catholic Church, in decreeing matters of faith, upon this principle, that the church is more visible than the scriptures, because the scriptures are seen by the church, and to abuse the reformation in England, which he affirms was erected on the foundation of lust, sacrilege, and usurpation. Dr. Stillingfleet hereupon answered Mr. Dryden, and treated him with some severity. Another author affirms, that Mr. Dryden's tract is very light, in some places ridiculous; and observes, that his talent lay towards controversy no more in prose, than, by the Hind and Panther, it appeared to do in verse. This poem of the Hind and Panther is a direct defence of the Romish Church, in a dialogue between a Hind, which represents the Church of Rome, and a Panther, which supports the character of the Church of England. The first part of this poem consists most in general characters and narration, which, says he, 'I have endeavoured to raise, and give it the majestic turn of heroic poetry. The second being matter of dispute, and chiefly concerning church authority, I was obliged to make as plain and perspicuous as possibly I could, yet not wholly neglecting the numbers, though I had not frequent occasion for the magnificence of verse. The third, which has more of the nature of domestic conversation, is, or ought to be, more free and familiar than the two former. There are in it two episodes or fables, which are interwoven with the main design, so that they are properly parts of it, though they are also distinct stories of themselves. In both of these I have made use of the common places of satire, whether true or false, which are urged by the members of the one church against the other.' Mr. Dryden speaks of his own conversion in the following terms;