Produced by Stephen Blundell and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/Canadian Libraries) CONTRIBUTIONS TO INTERNATIONAL LAW AND DIPLOMACY Edited by L. OPPENHEIM, M.A., LL.D. Membre de l'Institut de Droit International, Whewell Professor of International Law in the University of Cambridge, Honorary Member of the Royal Academy of Jurisprudence at Madrid, Corresponding Member of the American Institute of International Law. THE LEAGUE OF NATIONS AND ITS PROBLEMS CONTRIBUTIONS TO INTERNATIONAL LAW AND DIPLOMACY. Edited by L. OPPENHEIM, M.A., LL.D., Whewell Professor of International Law in the University of Cambridge. A GUIDE TO DIPLOMATIC PRACTICE. By the Right Hon. Sir ERNEST SATOW, G.C.M.G., LL.D., D.C.L., formerly Envoy Extraordinary and Minister Plenipotentiary. 2 Volumes. 8vo. 30_s._ net. INTERNATIONAL CONVENTIONS AND THIRD STATES. A Monograph. By RONALD F. ROXBURGH, of the Middle Temple, Barrister-at-Law; formerly Whewell International Law Scholar in the University of Cambridge; formerly Scholar of Trinity College, Cambridge. 8vo. 7_s._ 6_d._ net. LONGMANS, GREEN AND CO., London, New York, Bombay, Calcutta, and Madras. THE LEAGUE OF NATIONS AND ITS PROBLEMS THREE LECTURES BY L. OPPENHEIM, M.A., LL.D. WHEWELL PROFESSOR OF INTERNATIONAL LAW IN THE UNIVERSITY OF CAMBRIDGE MEMBRE DE L'INSTITUT DE DROIT INTERNATIONAL. HONORARY MEMBER OF THE ROYAL ACADEMY OF JURISPRUDENCE AT MADRID, CORRESPONDING MEMBER OF THE AMERICAN INSTITUTE OF INTERNATIONAL LAW _Festina lente_ LONGMANS, GREEN AND CO. 39 PATERNOSTER ROW, LONDON FOURTH AVENUE & 30TH STREET, NEW YORK, BOMBAY, CALCUTTA, AND MADRAS. 1919 PREFACE