906 Periodical verification of Colomal Standards. Ch. 31. No. 15.) 0 Wetghts and Measure. which the Colonial Standards are true and accurate copies of the Imperial Standards. Under the conditions so declared, the several Colonial Standards shall for all) pur- peses be conclusively deemed to be true and accurate copies of the ospective Imperial Standards. 19. The Colonial Standards shall be kept at such place as the Governor shall from time to time determine, and cach receptacle in whieh the same are Kept shall be secured by two locks which shall not be capable of being opened by the came kev 20. (1) Vhe Comptroller of Customs and lexcise and the Director of Surveys shall be Custodians of the Colonial Standards. (2) Fach of such Custodians shall have the custody of kev oof cach of the receptacle. im which the Coloniat Standards are placed, and the keys shall be so alle ated that no Custodian open more than one lock of cach receptacle, 2t. (1) The Custodians shall procure such copies of the Colomal Standards or any of them as they may think fit, and shall provide for verifying the same, and shall cause such copies to be authenticated as Secondary Standards in such manner as the Governor shall preseribe. (2) Every authenticated Secondary Standard: shall, until the contrary is proved, be deemed to be true and accurate and judicial notice shall be taken of every Second- ary Standard so authenticated, (3) The Secondary Standards shall from time to time be compared by the Custodians with the Colonial Standards and if necessary shall be corrected and adjusted, (1) Phe Custodians may at any time cancel any Secondary Standard and direct that it shall no longer be used as such, 22. (1) Once at least in every ten years the Governor shall cause every Colonial Standard to be verified at the standard department of the Board of ‘Trade and to be adjusted and renewed Tf requisite,