Section 17. Construction over Indian reservation

A gas corporation, an
  electric corporation or a gas and electric corporation may contract with
  the chiefs of any nation of Indians over whose lands it may be necessary
  to construct its gas or electric lines for the right to  construct  such
  lines  upon  such  lands,  but  no  such  contract  shall  vest  in  the
  corporation the fee of such lands nor the right to occupy the  same  for
  any  purpose  other than for the construction, operation and maintenance
  of such lines, nor shall such contract be valid or effectual  until  the
  same  has  been  ratified by the county court of the county in which the
  lands are  situated  and  approved  by  the  public  service  commission
  pursuant to section sixty-eight of the public service commission law.