The distinguished Father Theiner, of Rome, has lately given his friends occasion to regret that he had not remained known to the literary world by his _Monumenta_ alone. No words but those of praise and admiration could then have been found for him. Our occasion for this remark is his late controversy--or series of controversies--with M. Crétineau-Joly, concerning the Cardinals Consalvi and Caprara, and Bishop Bernier, touching their connection with the concordat of 1801. The matter has culminated in an octavo volume lately out, _Bonaparte, le Concordat de 1801 et le Cardinal Consalvi, suivi des deux Lettres au Père Theiner sur le Pape Clement XIV._, par J. Crétineau-Joly; and of which we made mention in our August number. M. Crétineau-Joly is a terrible adversary, and wields a trenchant blade. Such a rapid shower of cut, thrust, back, forward, and circular strokes is rarely seen. It is to be regretted, however, that M. Joly, in the abundance of his power of replication and retort, should not have been content with telling Father Theiner, as he does, "You have been given a bad cause to sustain, and you defend it with bad arguments." But blood becomes as hot in literary quarrels as in physical combats, and M. Joly goes entirely too far when he talks about surprising his adversary, "_Vingt fois, trente fois, en flagrant débit de mensonge_." Those who know Father Theiner are satisfied that he is in this case the victim of his imagination and of his simplicity, and that, moreover, he has been badly advised. * * * * * Dr. F. W. Kampschulte, Professor of History at the University of Bonn, has hitherto been known as an author only by a few works of secondary importance, such as his _History of the Ancient University of Erfurt_. He has, however, just taken rank quite suddenly among the best historians of Germany by his lately published _Johann Calvin, seine Kirche und sein Staat in Genf_, (John Calvin, his Church and his State at Geneva.) The first volume alone is as yet published. But this one is quite enough to display remarkable erudition, and an amount of literary labor nothing less than enormous. Dr. Kampschulte asserts on good grounds that, without the assistance of Berne, Genevan Protestantism would never have succeeded as it did, and he has, accordingly, thoroughly and successfully searched the archives of Berne for new and valuable documents. Finally, the author has not, like too many of his predecessors in the same field, been content to take for Calvin's correspondence Beza's edition of the _Epistolæ et Responsa Calvini_, which really contains but a small portion of Calvin's correspondence, but has with wonderful labor and perseverance collected a large amount of Calvin's letters hitherto unknown, and which were dispersed throughout Europe. * * * * *