English communal and Zionist worker; born at Liverpool in 1859; educated at the Liverpool Institute and at Queen's College, Liverpool. Prag has long been a leader in Zionist circles, but does not follow the Herzl movement, retaining allegiance to the Chovevei Zion, the English section of which he founded. He has contributed to the reviews articles on the question of the colonization of Palestine. Prag is a member of the council of the Anglo-Jewish Association and acted as its delegate in 1901, at Berlin, to the International Conference on the Jews of Rumania. He took an active part in arranging matters after the anti-Jewish disturbances in Limerick.