The first of these letters, that to the Duke of Meiningen, has already appeared in English, in a translation by Miss Lucy Wheelock for Barnard's _American Journal of Education_, since reprinted in pp. 21-48 of his _Kindergarten and Child Culture_, (see p. 146), and in a small volume under the title _Autobiography of Froebel_ (see p. 146). While a faithful attempt to reproduce the original, this translation struggled in vain to transform Froebel's rugged and sometimes seemingly incoherent sentences into adequate and attractive English, so that the long letter has proved to most English readers formidable and repellant. But in the original it is one of the most charming productions in literature, candid and confidential in tone, and detailing those inner gropings for ideas that became convictions which only an autobiography can reveal. These qualities are so admirably preserved in the translation by Miss Emily Michaelis and H. Keatley Moore that it seemed to leave nothing to be desired. They have not only given a faithful rendering, but they have impressed upon it the loving touch of faithful disciples. Accordingly I purchased from the English publishers the American rights to this translation; and have reproduced not only this letter, but that to the philosopher Krause, with Barop's "Critical Moments," and the "Chronological Abstract," all from duplicates of the English plates. The rest of the volume appears for the first time. The Bibliography seemed desirable, and is confined to attainable books likely to be of value to American teachers. The Index is full, but not fuller than the fragmentary character of the material seemed to require. The Table of Contents will also serve to make reference easy to the principal evens of Froebel's history.