§ 1. . . . every non-resident and every unnaturalized foreign-born resident of this Commonwealth shall be required to take out a license from the treasurer of the county in which he proposes to hunt. . . § 2. Possession of a gun, in the fields or in the forests or on the waters of this Commonwealth, by an unnaturalized, foreign-born resident or a non-resident of this Commonwealth, without having first secured the license required by this act, shall be prima facie evidence of a violation of its provisions; and any person so offending shall be liable to a penalty of twenty-five dollars for each offense. . .