FIRST EDITION. This book marks the first printing of the hitherto unknown introduction to the thorough linguistic commentary on the Jewish prayer book by Shabbethai Ben Issac ha-Sofer, the renowned 17th century Grammarian. The book is in Hebrew save for a 13-page introduction in German to B. Isaac`s life and work by the Jewish-German historian and theologian Abraham Berliner. 220x155mm. XVIII+82 pages. White quarter-cloth rebound Hardcover with original cover pasted on front and rear cover. Cover slightly worn. Pages stiff and browning, with humidity stains near upper edge. [SUMMARY]: This rare treatise on the language of the Jewish prayer-book is in good reading condition.