addition to this interest, there was also to be distributed as they fell due, the royalties from leases of mineral rights, the proceeds of the sale of certain lands already referred to and the rentals from the grazing lands. The question whether bonuses were to be included in royalties is a matter of statutory construction, not finally entrusted to the discretion of the Secretary, *359 but determinable in court at the instance of the beneficiaries as of right.
Having thus determined that the duty of the Secretary to pay this income to the adult members of the tribe is ministerial, we come now to the question how much discretion the statute gives him in withholding payment from minors. In respect to the income from the distributed lands, the Secretaryhas no duty whatever. The lands of the minors are given over to the custody and use of the parents who can cultivate or lease them and apply the proceeds as they see fit. Congress evidently intended to trust to the natural disposition of the parents to look after and care for their children out of the proceeds, and to allow them to treat the proceeds of the inalienable lands as a family fund to be administered by them until the children should reach their majority. It was probably anticipated that the proceeds of a minor's land from agriculture only would not be large and could not greatly exceed, if indeed it would equal, the expense his care and support would entail on the family.
With respect to the