The said board of fund commissioners shall require the bank selected as the fiscal agent of the state to furnish the board a statement of the amount of money received by said bank for the payment of interest on the bonds of the state, as aforesaid. The said bank shall open an account with the board of fund commissioners, crediting them with the amount received, and charging them with the bonds and coupons paid by it for the state, and its commissions, which commissions shall not exceed one-tenth of one percent of the amount paid by it.