§ 5. The contracting Powers of the Hague Convention for the peaceful settlement of international differences deem it expedient and desirable that, if the ordinary diplomatic negotiation has failed to settle such differences as do not involve either honour or vital interests, the parties should, so far as circumstances allow, institute an International Commission of Inquiry[7] for the purpose of elucidating the facts underlying the difference by an impartial and conscientious investigation. The Convention of 1899 had only six articles (9-14) on the subject. The Second Conference of 1907, profiting by the experience gained by the Commission of Inquiry in the Dogger Bank[8] case, the first and as yet only occasion on which a Commission of Inquiry was instituted, remodelled the institution, and Convention I. treats of the subject in twenty-eight articles (9-36). The more important stipulations are the following:-- (1) The Commissions are to be constituted by a special treaty of the parties, which is to determine the facts to be examined, the manner and period within which the Commission is to be formed, the extent of the powers of the Commissioners, the place where the Commission is to meet and whether it may remove to another place, the languages to be used by the Commission and parties, and the like (articles 9-10). If the treaty does not determine the place where the Commission is to sit, it shall sit at the Hague; if the treaty does not specify the languages to be used, the question shall be decided by the Commission; and if the treaty does not stipulate the manner in which the Commission is to be formed, it shall be formed in the manner determined by articles 45 and 57 of Convention I. (articles 11-12). The parties may appoint Assessors, Agents, and Counsel (articles 10, 13, 14). (2) The International Bureau of the Permanent Court of Arbitration acts as Registry for the Commissions which sit at the Hague; but if they sit elsewhere, a Secretary-General is to be appointed whose office serves as Registry (articles 15-16). (3) The parties may agree upon the rules of procedure to be followed by the Commission, but if they do not provide such rules themselves, the rules of procedure, comprised in articles 19-32 are applicable (article 17), and, in any case, the Commission is to settle such details of the procedure as are either not covered by the treaty of the parties or by articles 19-32, and is to arrange all the formalities required for dealing with the evidence (article 18).