The term “person” as used in this act¹ shall include every natural person; the term “firm” shall include copartnerships and associations. If a firm or corporation shall commit a misdemeanor, according to the provisions of this act, every director, officer, agent, employee or member participating in, aiding or authorizing the act constituting such misdemeanor shall be guilty of having committed a misdemeanor hereunder and shall be subject to the penalties herein provided.