Section 21. (1) The Chemical Examiner shall, on payment of such fee (if any) as the Governor General in Council

(3) A 1886.] Petroleum. 147 (Miscellaneous.—Sections 22-25.) (5) Subject to the payment of such fees as the Governor General in Council may, by notification in the Gazette of India, prescribe in this behalf, the said model test-apparatus shall be at all reasonable times open to inspection by any person desiring to inspect it. Miscellaneous. 21. Verification of test-apparatus. 136 Petroleum. [ACT XII Miscellaneous. SECTIONS. 22. Power to Local Government to exempt petroleum from operation of this Act. 23. Power to apply this Act to other fluids. 24. Power to limit operation of enactments relating to municipalities. 25. Power to revoke or vary notifications. (4) The Chemical Examiner shall keep a register, in a form to be prescribed by the Governor General in Council, of the certificates granted under this section. (2) If any apparatus for testing petroleum, when compared and verified as provided by sub-section (1), is found correct, or correct subject to certain corrections to be applied to the results of the tests, the Chemical Examiner shall stamp the same with a special number, and with the date of the verification, and shall further give a certificate in writing under his hand, in a form to be prescribed by the Governor General in Council, to the effect that on the date aforesaid the apparatus was compared and verified by him and found to be correct, or correct subject to certain specified corrections to be applied to the results of the tests. 21. (1) The Chemical Examiner shall, on payment of such fee (if any) as the Governor General in Council may, from time to time, by notification in the Gazette of India, prescribe, compare with the said model test-apparatus and verify every apparatus for testing petroleum which is submitted to him for the purpose. (3) A certificate granted under this section shall, until the contrary is proved, be conclusive proof of the matters stated therein.