Every inspector, agent or employee of any such public carrier who, upon making such an inspection, shall on demand of shipper or consignor fail to deliver to the shipper or consignor at such time a true copy of each and every report or certificate by him made concerning the condition of the car or consignment about to be shipped, and every such inspecting agent who shall wilfully make or cause to be made or published in any such report or certificate any false statement as to the condition of the livestock or commodity by him so inspected, shall be deemed guilty of a misdemeanor, and upon conviction thereof shall be punished by fine not exceeding $300 for each offense.