Prominent among the theologians who participated in the controversy against the Adiaphorists were Flacius, Wigand, Gallus, and others, who in Magdeburg opened a most effective fire on the authors, sponsors, and advocates of the Interim. Following are some of the chief publications which dealt with the questions involved: "Opinion concerning the Interim, by Melanchthon, June 16, 1548," published by Flacius without the knowledge of Melanchthon.--"Report on the Interim by the Theologians of Meissen," 1548.--"That in These Dangerous Times (in diesen geschwinden Laeuften) Nothing is to be Changed in the Churches of God in Order to Please the Devil and the Antichrist," by John Hermann, 1548. A Latin edition of this publication appeared 1549, mentioning Flacius as its author.--"A Brief Report (Ein kurzer Bericht) on the Interim from which One may Easily Learn the Doctrine and Spirit of That Book," 1548.--"A General Protest and Writ of Complaint (Eine gemeine Protestation und Klageschrift) of All Pious Christians against the Interim and Other Sinister Schemes and Cruel Persecutions by the Enemies of the Gospel, by John Waremund, 1548." Waremund was a pseudonym for Flacius.--"Against the Interim, Papal Mass, Canon, and Master Eisleben," 1519.--"Against the Vile Devil (Wider den schnoeden Teufel), who Now Again Transforms Himself into an Angel of Light, _i.e._, against the New Interim, by Carolus Azarias Gotsburgensis, 1549." Of this book, too, Flacius was the author. (Preger 1, 67.)--"Apology (Entschuldigung) of Matthias Flacius Illy. to a Certain Pastor," 1549.--"Several Letters of the Venerable D. M. Luther concerning the Union of Christ and Belial, Written 1530 to the Theologians at the Diet in Augsburg," 1549, with a preface by Flacius.--"Apology of Matthias Flacius Illy., Addressed to the University of Wittenberg, regarding the Adiaphora," 1549.--"Writing of Matthias Flacius Illy. against a Truly Heathen, yea, Epicurean Book of the Adiaphorists (in which the Leipzig Interim is Defended) in Order to Guard Oneself against the Present Counterfeiters of the True Religion," 1549.--"Answer of Magister Nicolas Gallus and Matthias Flacius Illy. to the Letter of Some Preachers in Meissen regarding the Question whether One should Abandon His Parish rather than Don the Cassock" (_linea vestis, Chorrock_).--"Against the Extract of the Leipzig Interim, or the Small Interim," by Flacius, 1549.--"Book concerning True and False Adiaphora (_Liber de Veris et Falsis Adiaphoris_), in which the Adiaphoristic Controversy is Explained Almost in Its Entirety, by Flacius, 1549." This book, which is most frequently quoted and deals most thoroughly with the questions involved, is found in Schluesselburg's _Catalogus Haereticorum_ 13, 154ff.--"An Admonition (Vermahnung) to be Constant in the Confession of the Truth, in Cross and Prayer, by Flacius," 1549.--"A Christian Admonition by Matthias Flacius Illy. to be Constant in the True, Pure Religion of Jesus Christ and in