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. 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 Lagarde's time, this volume also serves as a period piece containing a fresh view of writings that helped inform the growth of canon law.