Although at the time of the opening of the Breslau Seminary Frankel numbered among his colleagues such eminent scholars as Graetz, Bernays, Joel, and Zuckermann, he himself was and always remained the head, in fact as well as name. His lectures were chiefly on the Talmud, the importance and value of which he continually endeavoured to make clear to his pupils. He read and explained to them certain sections of it on each of the first five days of the week, and in so doing he made a somewhat free use of the mode of teaching that had been in vogue in the ancient Jewish academies. He allowed and even encouraged his pupils to enter upon discussions on the subject-matter of his lecture. By this means Frankel was able to test the industry and talent of each individual pupil. Once a week, however, he gave a regular lecture in the classroom, at which there was no discussion. On these occasions he generally discoursed on the origin and development of the oral law, extending over a period of several centuries. These lectures were subsequently embodied in his book entitled _Darkè Hammishnah_, to which special reference will presently be made. There is no doubt that Frankel was greatly in favour of a free and unrestricted investigation of Judaism and its teachings, and that he always essayed to reconcile them with what is called in modern phrase “der Zeitgeist.” Instances of this are to be found everywhere in his writings and treatises, many of which appeared in the monthly magazine _Die Monatsschrift für Geschichte und Wissenschaft des Judenthums_, which he edited from 1852 till 1868. As regards Frankel's books it may justly be said that they are classical, but want of space precludes a reference to more than three of them, which appear to be of special interest.