The Academy is an institution for the study and teaching of public and private international law and related subjects. Its purpose is to encourage a thorough and impartial examination of the problems arising from international relations in the field of law. The courses deal with the theoretical and practical aspects of the subject, including legislation and case law. All courses at the Academy are, in principle, published in the language in which they were delivered in the Collected Courses of the Hague Academy of International Law. This volume contains: - Conferences prononcees a l'occasion du soixante-quinzieme anniversaire de l'Academie/Addresses Delivered on the Occasion of the 75th Anniversary of the Academy. - La contribution de l'Academie au developpement de la science et de la pratique du droit international prive, par A.V.M. STRUYCKEN, membre du Curatorium de l'Academie de droit international de La Haye. - The Contribution of the Academy to the Development of the Science and Practice of Public International Law by S. SKUBISZEWSKI, Member of the Curatorium of the Hague Academy of International Law. - Is International Law Threatened by Multiple International Tribunals? by J. I. CHARNEY, Professor at Vanderbilt University, Nashville.