Section 14
SEC. 14. The grantee shall keep a record of all receipts from the sale of electrical energy, which record shall be subject to inspection in Manila by the Auditor for the Philippine Islands, who shall audit and approve the accounts of the grantee at the end of each month before the payment of the said percentage tax. The accounts audited and approved as herein provided, shall be final and conclusive evidence of the liability of the grantee in the absence of fraud or mistake.