Section 303C. Every barrel, keg, bottle or other container containing methyl alcohol or wood alcohol, so called, or any drug or medicine intended for external use containing methyl alcohol shall bear in capital letters not less than three eighths nor more than one and one half inches in height, stencilled or printed thereon, the words ”POISON, NOT FOR INTERNAL USE”, or shall bear a label which shall include the word ”POISON” and which shall conform to regulations prescribed by the department of public health, authority to prescribe such regulations and to amend or annul the same being hereby granted to said department. Whoever, himself or by his servant or agent, sells, exchanges or delivers any such alcohol, drug or medicine in any container not conforming to this section shall be punished by a fine of not less than fifty nor more than two hundred dollars.