Among the strange and unforeseen developments that have characterised the fourth quarter of the nineteenth century, few are likely to be regarded by the future historian with a deeper or more melancholy interest than the anti-Semite movement, which has swept with such a portentous rapidity over a great part of Europe. It has produced in Russia by far the most serious religious persecution of the century. It has raged fiercely in Roumania, the other great centre of the Oriental Jews. In enlightened Germany it has become a considerable parliamentary force. In Austria it counts among its adherents men of the highest social station. Even France, which from the days of the Revolution has been specially distinguished for its liberality to the Jews, has not escaped the contagion. General Boulanger found the anti-Jewish sentiment sufficiently powerful to make an appeal to it one of the articles of his programme, and the extraordinary popularity of the writings of Drumont shows that Boulanger had not altogether miscalculated its force. It is this movement which has been the occasion of the very valuable work of M. Anatole Leroy-Beaulieu on 'Israel among the Nations.' The author, who is universally recognised as one of the greatest of living political writers, has special qualifications for his task. With an exceedingly wide knowledge of the literature relating to his subject he combines much personal knowledge of the Jews in Palestine and in many other countries, and especially in those countries where the persecution has most furiously raged.