There is being developed a special technique of codification. The Sixth Pan American Conference at Havana adopted in the form of seven conventions a codification of that number of topics in public international law; namely, on the status of aliens, treaties, diplomatic privileges and immunities, asylum, civil strife, and maritime neutrality. The preparatory work had been done by (a) the American Institute of International Law working through its executive committee, and (b) the Rio Commission of Jurists reestablished by the Fifth Pan American Conference. The proposed world conference upon codification has now been called to meet at The Hague in the spring of this year. There have been no official indications as yet of its postponement because of other international conferences. The machinery created by the League of Nations to perform the work preparatory to this conference has been functioning since 1925. The working of this machinery has already been described in this Jo u rn al down to the creation of the present Preparatory Committee for the Codification Conference. It will be remembered that the Committee of Experts for the Progressive Codification of International Law, composed of sixteen members, prepared a provisional list of topics suitable for codification by international agreement, made reports upon various topics, submitted questionnaires upon seven of them to the various governments, and selected therefrom three topics as the agenda of the first world conference on codification. This cpmmittee also made one general and two special reports upon the further work of codification, with some indications as to procedure.