collection of principal and interest.] The bonds and securities in which said funds are from time to time invested shall be forthwith deposited with the treasurer of San Miguel county, New Mexico; and it is made the duty of said treasurer to receive and have the custody of such bonds and securities, to collect and pay the same over to the treasurer of said board of trustees, the principal thereof at maturity, to be reinvested and forthwith to pay the same over to the treasurer of the board of trustees of the town of Las Vegas administering the Las Vegas grant to be by said board reinvested in other bonds or securities chosen and approved by said board and court; and it shall also be the duty of the said treasurer of said county to collect the interest on all such bonds and securities and to place the same or such portion thereof as may be determined by such board and court as hereinafter provided, to the credit of the several school districts within the Las Vegas grant in proportion to the number of children of school age within said districts respectively.