All lands granted under the provisions of the act of congress, entitled, “An act to enable the people of New Mexico to form a constitution and state government and be admitted into the union on an equal footing with the original states; and to enable the people of Arizona to form a constitution and state government and be admitted into the union on an equal footing with the original states,” for the purposes of said several institutions are hereby accepted and confirmed to said institutions, and shall be exclusively used for the purposes for which they were granted; provided, that one hundred and seventy thousand acres of the land granted by said act for normal school purposes are hereby equally apportioned between said three normal institutions, and the remaining thirty thousand acres thereof is reserved for a normal school which shall be established by the legislature and located in one of the counties of Union, Quay, Curry, Roosevelt, Chaves or Eddy.