The Minister may declare a plant to be a rubber plant in addition to those listed in the interpretation section. The Minister may also appoint inspectors for the purpose of this Act (sect. 3). Powers of inspectors are set out in section 4. Rubber must not be shipped unless it is classified according to the prescribed grade and marked accordingly. For purposes of this Act there is established a Rubber Board under section 7. This Board shall hear and decide on appeals brought before it by owners,