In conclusion I shall mention the colophon to Codex Harl. 5713, which may have some interest for the English reader. It runs: “I have written it in honour of the noble and pious, etc., Humphrey Wanley, the noble Librarian of my Lord Treasurer. May his glory be increased. In the year 5474 (1714) in the holy community of London, under the reign of the noble and happy Queen Anne. May the Lord increase her splendour and glory.” The signature of the copyist is “Aaron the son of Moses, born in the city of Navaschadok in Poland.” By the way, we learn from this signature that the immigration of Polish Jews into this country had already begun in the time of Queen Anne, and perhaps still earlier. Thus everything in a MS., the arrangement of the matter, the remarks of the owners, the signature of the copyist, sets the reader thinking, and contributes many a side‐light to the history of the Jews. XI. TITLES OF JEWISH BOOKS It is now more than half a century since Isaac Reggio in his edition of Elijah Delmedigo’s _Examination of Religion_, made the remark that this book adds to its other merits that of bearing a title corresponding to its contents,—a merit that is very rare in Jewish books. Reggio proceeds to give a few specimens confirming his assertion, and concludes his remarks with a eulogy on Delmedigo, who in this respect also had the courage to differ from his contemporaries. Zunz also once wrote an article on titles of books. But this article unfortunately appeared in some German periodical which the British Museum does not possess, and I could not even succeed in ascertaining whether Zunz treats at all of titles of Hebrew books, nor am I aware that the subject has been taken up by any other scholar, Isaac D’Israeli’s few notes on the subject in his _Curiosities of Literature_ being scarcely worth mention. It seems to me, however, interesting enough to deserve some illustration, though I can by no means hope to be complete.