s 12 Prosecutions at instance of procurator fiscal.
It shall be lawful for the Lord Advocate, . . ., by Order to direct in the case of any Act of Parliament that, notwithstanding anything therein contained all proceedings in the sheriff court under the Summary Jurisdiction (Scotland) Acts for a contravention of or an offence against such Act of Parliament shall be taken by and at the instance of the procurator fiscal, . . ..