13. Upon the application for a warrant under this Act, the certificate of the analyst or chemist of any analysis made by him shall be sufficient evidence of the facts therein stated. Every such certificate shall be duly signed and acknowledged by such analyst or chemist before an officer authorised to take acknowledgments of conveyances of real estate. 14. Courts of special sessions shall have jurisdiction of all cases arising under this Act, and their jurisdiction is hereby extended so as to enable them to enforce the penalties imposed by any or all sections thereof. 15. In all prosecutions under this Act, one-half of the money shall be paid by the court or clerk thereof to the city or county where the recovery shall be had, for the support of the poor, except in the city and county of New York shall be equally divided between the pension funds of the police and fire departments, and the residue shall be paid to the Dairy Commissioner, who shall account therefor to the Treasury of the State, and be added to any appropriation made to carry out the provisions of this Act. All sums of money expended by the Dairy Commissioner under the provisions of this Act shall be audited and allowed by the Comptroller of the State. Any bond given by any officer shall be subject to the provisions of this section. 16. In all prosecutions under this Act relating to the sale and manufacture of unclean, impure, unhealthy, adulterated, or unwholesome milk, if the milk be shown to contain more than eighty-eight per centum of water or fluids, or less than twelve per centum of milk solids, which shall contain not less than three per centum of fat, it shall be declared adulterated, and milk drawn from cows within fifteen days before, and five days after, parturition, or from animals fed on distillery waste, or any substance in the state of putrefaction or fermentation, or upon any unhealthy food whatever, shall be declared unclean, unhealthy, impure and unwholesome milk. This section shall not prevent the feeding of ensilage from silos. 17. The doing of any thing prohibited being done, and the not doing of any thing directed to be done in this Act, shall be presumptive evidence of a wilful intent to violate the different sections and provisions thereof. If any person shall suffer any violation of the provisions of this Act by his agent, servant, or in any room or building occupied or controlled by him, he shall be deemed a principal in such violation and punished accordingly.