An Act amending the act of June 23, 1931 (P.L.923, No.309), entitled "An act to prohibit the employment in any factory or cannery, or in berry, fruit and vegetable raising and harvesting, in this Commonwealth, of any child under sixteen years of age, residing in another state, during the time when the laws of the state of such child's residence require his attendance at school, to regulate the conditions of such employment of such child during the time when the laws of the state of such child's residence do not require his attendance at school, to prescribe the duties of the employer of such child, to provide for the issuance of school requirement certificates for children resident in this Commonwealth desiring such employment in other states; providing for the enforcement of this act by certain officers, and defining the procedure in prosecutions thereunder; providing penalties for the violation of the provisions thereof; and repealing all acts or parts of acts inconsistent therewith," further providing for truant officers.