Provided, That every member of said tribes shall have an allotment of 160 acres of land, as in said agreement provided, to be selected within the tract of country so ceded, except land in any part of said reservation now used or occupied for military, agency, school, school-farm, religious, or other public uses, or in sections 16 or 36 in each Congressional township, except, in cases where any Cheyenne or Arapahoe Indian has heretofore made improvements upon and now uses and occupies a part of said sections 16 and 36, such Indian may make his or her selection within the boundaries so prescribed so as to include his or her improvements; and except in that part of the lands by said agreement ceded, now occupied and claimed by the Wichita and affiliated bands of Indians described as follows, to wit:
Commencing at a point in the middle of the main channel of the Washita River where the ninety-eighth meridian of west longitude crosses the same; thence up the middle of the main channel of the said river to the line of 98 deg. 40’ west longitude; thence up said line of 98 deg. 40’ due north to the middle of the main channel of the main Canadian River; thence down the middle of the main Canadian River to where it crosses the ninety-eighth meridian; thence due south to the place of beginning.
And provided, That said sections 16 and 36 in each Congressional township in said reservation shall not become subject to homestead entry, but shall be held by the United States and finally sold for public-school purposes; and that when the allotments of lands shall have been selected and taken by the members of the Cheyenne and Arapahoe tribes as aforesaid and approved by the Secretary of the Interior the title thereto shall be held in trust for the allottees, respectively, for the period of twenty-five years in the manner and to the extent provided for in the act of Congress approved February 8, 1887 (24 U.S. Statutes at Large, p. 388); and
Whereas it is provided in the act of Congress accepting, ratifying, and confirming the said agreement with the Cheyenne and Arapahoe Indians, approved March 3, 1891 (26 U.S. Statutes at Large, pp. 989-1044), section 16—