Section 9
SEC. 9. The grantee shall keep an account of the receipts of the business transacted by him and shall furnish the Auditor General and the National Treasurer the Philippines a copy of such account not later than the thirty-first day of January each year for the preceding year. For the purpose of auditing the accounts rendered to the Auditor General and the National Treasurer, the books and accounts of the grantee, or duplicates thereof, shall be subject to the official inspection of the Auditor General or his authorized representatives, and the audit and approval of such accounts by said officers shall be final and conclusive evidence as to the amount of saw s receipts, except that the grantee shall have the right to appeal to the courts of the Philippines under the terms and conditions provided in the laws of the Philippines.