A notable resource for both church historians and linguists, this work of Lagarde contains both Syriac and Greek materials concerning ancient ecclesiastical laws. A number of ancient documents are cited in this unusual collection. Half of this collection is presented in the original Syriac and half in the original Greek. All introductions and notes are written in Latin. A noteworthy source that comprises part of the volume is the Testamentum Domini, extracts of which Lagarde included in his collection. Intended for the serious linguist and church historian, this work requires language skills to unravel. As a collection of materials that had been inaccessible up to Lagardes time, this volume also serves as a period piece containing a fresh view of writings that helped inform the growth of canon law. Paul Anton de Lagarde (1827-1891) was a biblical scholar and student of ancient languages. Having studied at Berlin, Halle, London, and Paris, he had a wide exposure to international thought. He eventually taught at Gottingen. Despite his participation in the anti-Semitism of his day, he was a gifted student of Semitic languages. His voluminous linguistic works are still recognized for their insights into oriental languages. He made important contributions to the study of Syriac, Aramaic, Arabic, Hebrew, and Coptic, as well as Greek and Latin.