The moneys derived from the sale of the tax anticipation notes herein authorized shall be deposited with the county treasurer, and the clerk of the county commission shall charge the treasurer of the county therewith; and said moneys shall be used solely for the payment of county warrants of such counties issued for the payment of the expenses and obligations of the county of the fiscal year in which said notes are issued; but should there remain a surplus after all said warrants have been paid, the said surplus may be applied on the order of the county commission to the payment of maturing anticipation notes if any or transferred to the various county funds respectively according to law.
§ 50.140, RSMo