Germany guarantees to repay to Brazil the fund arising from the sale of Sao Paulo coffee which she refused to allow Brazil to withdraw from Germany. Contracts--Pre-war contracts between allied and associated nations, excepting the United States, Japan and Brazil, and German nationals, are canceled except for debts for accounts already performed. Opium--The contracting powers agree, whether or not they have signed and ratified the opium convention of January 23, 1912, or signed the special protocol opened at The Hague in accordance with resolutions adopted by the third opium conference in 1914, to bring the said convention into force by enacting within twelve months of the time of peace the necessary legislation. Missions--The allied and associated powers agree that the properties of religious missions in territories belonging or ceded to them shall continue in their work under the control of the powers, Germany renouncing all claims in their behalf. SECTION 11. Air Navigation--Aircraft of the allied and associated powers shall have full liberty of passage and landing over and in German territory; equal treatment with German planes as to use of German airdromes, and with most favored nation planes as to internal commercial traffic in Germany. SECTION 13.--Freedom of Transit--Germany must grant freedom of transit through her territories by rail or water to persons, goods, ships, carriages and mail from or to any of the allied or associated powers, without customs or transit duties, undue delays, restrictions and discriminations based on nationality, means of transport or place of entry or departure. Goods in transit shall be assured all possible speed of journey, especially perishable goods. (The remainder of Section 12 concerns the use of European waterways and railroads.) SECTION 13. International Labor Organizations--Members of the league of nations agree to establish a permanent organization to promote international adjustment of labor conditions, to consist of an annual international labor conference and an international labor office. The former is composed of four representatives of each state, two from the government and one each from the employers and the employed; each of them may vote individually. It will be a deliberative legislative body, its measures taking the form of draft conventions or recommendations for legislation, which if passed by two-thirds vote must be submitted to the lawmaking authority in every state participating. Each government may either enact the terms into law; approve the principles, but modify them to local needs; leave the actual legislation in case of a federal state to local legislatures; or reject the convention altogether without further obligation.