Section, act Aug. 4, 1910, ch. 140, § 1, 36 Stat. 270, provided that no new irrigation project on any Indian reservation, allotments, or lands, could be undertaken until it had been estimated for and a maximum limit of cost ascertained from surveys, plans, and reports submitted by chief irrigation engineer in Indian Service and approved by Commissioner of Indian Affairs and Secretary of the Interior, that such limit of cost could in no case be exceeded without express authorization of Congress, and that no project to cost in the aggregate to exceed $35,000 could be undertaken on any Indian reservation or allotment, without specific authority of Congress.