That fractional townships twenty-eight north, ranges fifteen and sixteen east, and fractional townships twenty-nine north, ranges fourteen and fifteen east, Montana principal meridian, within the boundaries of said reservation, embracing a total area of approximately fifty-six thousand and thirty-five acres, are hereby set apart as a reservation for Rocky Boy's Band of Chippewas and such other homeless Indians in the State of Montana as the Secretary of the Interior may see fit to locate thereon, and the said Secretary is authorized, in his discretion, to allot the lands within the reservation hereby created under the provisions of the general allotment Act of February eighth, eighteen hundred and eighty-seven (Twenty"fourth Statutes at Large, page three hundred and eighty-eight), as amended.