Art. 99. The rubber expositions shall be true expositions held in relation to the machinery and utensils and products of rubber of all kinds, but the sale sought to be registered in a special book, by the payment of a fixed percentage to the organizing commission which shall apply this income to the interests of these same expositions. Art. 100. Foreign products can be admitted to these rubber expositions, for the purpose of permitting comparison and perfecting the national industry but shall receive no premium. Section 1. Foreign products destined for the rubber expositions shall be free of all custom house duties, as established in Law No. 2,544, January 4, 1912, Article 89, No. 6, but if they are sold, shall pay their respective import duties when given to the buyers. Sec. 2. Foreign products not sold shall be re-exported for the account of the respective expositors. Art. 101. The transportation of the national products destined for the rubber expositions shall be gratuitous. Art. 102. For these expositions there shall be prepared bound statistics and relatorios especially relative to the former period and as regards the rubber industry in Brazil, compared with the world movement. Art. 103. During the expositions there shall be held: 1. National congresses specializing upon the rubber industry. 2. Lectures upon subjects previously chosen and illustrated with stereopticon slides. For the carrying out of what is ordered in this article, the organizing commission shall provide for the respective programs and other measures for its entire success. Art. 104. From all the principle products exhibited some specimens shall be selected to constitute a permanent exhibit, which shall remain exhibited in the Commercial Museum of Rio de Janeiro, and in whose care shall also remain some reserves to be sent to similar Museums in Brazil and in foreign lands. TITLE VII The Direction and Inspection of the Service Art. 105. The direction and inspection of all the service for the economic defense of rubber, shall be in charge of a provisory department of the Minister of Agriculture, Industry and Commerce, entitled “Superintendency of the Protection of Rubber.” Art. 106. The superintendency is charged with: 1. To receive, to record, to prepare, and to inform the manuscripts which depend upon the despatch of the Minister. 2. To see to the effective and integral execution of measures of an administrative character foreseen in the Regulation. 3. The study, planning, calculating and execution of the work that must be done by the administration. 4. The study, planning, calculating, and execution of the work that must be done by contract. 5. The closing, with the approval of the Minister, of the contracts and the decrees relative to the concurrence of the States and Municipalities for the works and measures which they resolved to aid.