Section 59. Except as otherwise provided by law, the divisions of the juvenile court department shall have and exercise, within their respective jurisdictions, the same powers, duties, and procedure as the divisions of the district court department; and all laws relating to district courts or municipal courts in their respective counties or officials thereof or proceedings therein, shall, so far as applicable, apply to said divisions of the juvenile court department.

The divisions of the juvenile court department shall also have jurisdiction in equity concurrent with the supreme judicial court and with the superior court department in all cases and matters arising under the provisions of chapters 119 and 210.