Section 31
SEC. 31. Any unauthorized person owning, carrying, holding, having, controlling, having possession of, or knowingly having on his promises, any opium, cocaine, alpha or beta eucaine, or any derivative, or preparation of such drugs or substances, on and after March nineteen hundred and eight, shall be punished by a fine nut exceeding ten thousand pesos, or by imprisonment for not exceeding live years, or by both such fine and imprisonment, in the of the court': Provided, however, That in the case of 'lie commission of a second offense under the provisions of this section, any person so convicted, if other than a citizen of the United States or a citizen of the Philippine Islands, may, by order of the court, be deported.