144 WAR BORROWING of the next Liberty Loan, the member bank may substitute as security for its notes the notes of its customers secured in turn by the new Liberty Loan bonds. As payments are received from these customers, ­ or as the bank obtains funds in other ways, it is enabled gradually to reduce the amount of its borrowings from the Federal Reserve Bank. The periodic withdrawal of government deposits in the form of remittance of quotas to the Federal Reserve Banks might be expected to subject the resources ­ of the depositary banks to recurrent strain — reflected in turn in general monetary disturbance. Eventually the funds so remitted and thereafter disbursed in government expenditure would, in part at least, find their way back into the banks; but the interval would be considerable enough to cause monetary ­ discomfort. In anticipation of this tendency the Federal Reserve ­ Board took early steps to ensure that “ there should be no disturbance in the money market and that interest rates should be normal and as free as possible from fluctuation.” Accordingly before the subscriptions to the First Liberty Loan had closed and in anticipation of the Federal Reserve amendments ­ of July 21, 1918, the Federal Reserve Board established a preferential rate of discount for notes of member banks secured by government obligations ­ — certificates or bonds. Federal Reserve Banks were further authorized to discount for nonmember ­ banks, upon the endorsement of a member bank, notes secured by government obligations, whether made by the non-member banks themselves or by their customers, when the proceeds had been