It is the purpose of this thesis to fill a long felt need for a grammatical study of the Jewish Babylonian Aramaic texts. A sufficient number of the texts have now been published to provide a corpus for this undertaking. In making available the essential data on this dialect to the scholars who will some day write a comparative grammar of the Aramaic dialects, it is hoped that Semitic Studies in general and Talmudic Studies in particular may be served.