Little, if at all, inferior in importance to governmental publications, are the fruits of private research. Several voluminous collections of original documents deserve special mention. Not to speak of the publications of the national French Historical Society, the "Société de l'Histoire du Protestantisme Français" has given to the world, in its monthly Bulletin, so many hitherto inedited documents, besides a great number of excellent monographs, that the volumes of this periodical, now in its twenty-eighth year, constitute in themselves an indispensable library of reference. That admirable biographical work, "La France Protestante," by the brothers Haag (at present in course of revision and enlargement); the "Correspondance des Réformateurs dans les Pays de Langue Française," by M. Herminjard (of which five volumes have come out), a signal instance of what a single indefatigable student can accomplish; the collections of Calvin's Letters, by M. Jules Bonnet; and the magnificent edition of the same reformer's works, by Professors Baum, Cunitz, and Reuss, a treasury of learning, rich in surprises for the historical student--all these merit more particular description than can here be given. The biography of Beza, by Professor Baum, the history of the Princes of Condé, by the Due d'Aumale, the correspondence of Frederick the Pious, edited by Kluckholn, etc., contribute a great deal of previously unpublished material. The sumptuous work of M. Douen on Clément Marot and the Huguenot Psalter sheds new light upon an interesting, but until now obscure subject. The writings of Farel and his associates have been rescued from the oblivion to which the extreme scarcity of the extant copies consigned them; and the "Vray Usage de la Croix," the "Sommaire," and the "Manière et Fasson," can at last be read in elegant editions, faithful counterparts of the originals in every point save typographical appearance. The same may be said of such celebrated but hitherto unattainable rarities as the "Tigre" of 1560, scrupulously reproduced in fac-simile, by M. Charles Read, of Paris, from the copy belonging to the Hôtel-de-Ville, and the fugitive songs and hymns which M. Bordier has gathered in his "Chansonnier Huguenot."