904 Metric measure, surface. 9th Schedule, Use of {roy weights. Use of avoirdupois weights, Use of measures. Ch. 31. No. 15.]) Wetghts and Measures. or parts of a square yard as are in the said Schedule specified respectively in this behalf. (3) These measures are in this Ordinance referred to as Imperial measures of surface. 11. (1) The measures of surface specified in the Ninth schedule hereto are hereby declared to be metric measures of surface. (2) Kach metric measure of surface is hereby declared to contain that extent of surface which, expressed in terms of Imperial measures of surface, is specified in the said schedule as the equivalent of such metric measure 12. (1) Gold and silver, and articles made thereof, including gold and silver thread, lace, or fringe, also plati- num, diamonds, and other precious metals or stones, may be sold or dealt in by troy weight: Provided that diamonds may also be dealt with in trade by the carat as used in England. (2) Drugs when sold by retail, may be sold by apothe- ‘aries Weights or measures as used in England. 13. The avoirdupois weights specified in) the First Schedule hereto and any w eight being any multiple or part of any such avoirdupois weight, and the metric weights specified in the Third Se hedule hereto and any weight being any multiple or part of any such metric weight, may be used in selling or computing the weight of any article whatever, and shall be the only weights that may lawfully be used in the sale or computation of weight for the purpose of any contract or dealing of any articles except the things pernutted to be sold by troy weight or apothecaries weight. 14, The measures specified in the Fourth, Fifth, Sixth, Seventh, Eighth and Ninth Schedules hereto, and multiples or parts of any such measures, shall be the only measures that may, in any sale, contract, or dealing, lawfully be used for computing or expressing the quantity of anything to be measured, except the things permitted to be measured by apothecaries measure.