A letter by Mār Jacob, bishop of Edessa, on Syriac orthography : also a tract by the same author, and a discourse by Gregory Bar Hebræus on Syriac accents. Now edited, in the original Syriac, from mss. in the British [...] / by George Phillips. To which are added appendices. London : Williams and Norgate ; Edinburgh : Williams and Norgate, 1869