Section 8
SEC. 8. The grantees shall keep a separate account of the gross receipts of the business transacted by them in the Philippines and shall furnish a copy of such account not later than the thirty-first of January of each year for the preceding year. For the purpose of auditing the accounts so rendered to the Auditor General and the National Treasurer, all books and accounts of the grantees or duplicates thereof, so far as they relate to the business transacted in the Philippines, shall be kept in the Philippines and shall be subject to the official inspection of the Auditor General or his authorized representatives, and the audit and approval of such accounts shall be final and conclusive evidence as to the amount of said gross receipts, except that the grantees shall have the right to appeal to the courts of the Philippines, under the terms and conditions provided in the laws of the Philippines.