At this time, the mental activity of the Rabbis was confined to the exposition and investigation of the text of the Scriptures, which they called the “written law.” But a little later their attention was also directed to the study of the “unwritten law,” or oral traditions, to which reference is sometimes made in the Pentateuch. Thus a new sphere of activity was opened to them, which soon begot a science, embracing diverse branches of study, and rising by degrees to very large proportions. The mode of teaching adopted by these masters was somewhat similar to that employed by Socrates. Questions were put and answered, and the decisions of the teachers were committed to memory by the pupils. This method, however, had the disadvantage attendant upon constant migration. Rabbi Jehuda, surnamed “the Prince,” thereupon, towards the early part of the third century of the common era, collected all the floating dicta of the sages, together with the large mass of law and rulings, and recorded them for the first time in writing. In this way a code was drawn up, the materials of which the editor divided into six sections. The first section is named “Seeds,” and treats principally of agrarian laws. The second, called “Feasts,” contains the ordinances relating to the Sabbath and festivals. The third, entitled “Women,” deals chiefly with marriage and divorce. The fourth, called “Damages,” discusses civil and criminal law. The fifth is named “Holiness,” and treats of sacred things, such as the Temple, sacrifices, &c. The last section, entitled “Purification,” deals with various Levitical and sanitary laws. The whole collection was then called _Mishna_ (from _shannah_, “to study”), which means “learning or teaching.” As in process of time a great many new traditions sprang up, the _Mishna_ formed the materials for a new compilation which is called the _Talmud_, sometimes also the _Gemara_. Both names have the same signification—study and learning; the only difference between them is, that the word Talmud is derived from the Hebrew, and Gemara from the Syrian language. There are two Talmuds—the Jerusalem and the Babylonian. The first was compiled at the beginning of the fourth century of the common era, from the decisions of the colleges in Palestine, and the second from those of the Academy of Sora in Babylonia.