The Minor Tractates of the Talmud: Massektoth Ketannoth In Two Volumes

The minor tractates are essays from the Tannaitic period or later dealing with topics about which no formal tractate exists in the Mishnah. They may thus be contrasted to the Tosefta, whose tractates parallel those of the Mishnah. The first eight or so contain much original material; the last seven or so are collections of material scattered throughout the Talmud. According to Rabbi Chaim Kanievsky, the Minor Tractates date from the period of the Geonim.