130 WAR BORROWING the loan, to acquire “ as and when offered ” Treasury ­ certificates of indebtedness “ to as large an amount as practicable and at least equal to 50 per cent, of the payments which they will have to make from time to time on account of subscriptions, and that they utilize such certificates of indebtedness in making payment.” To encourage banks to make at least 50 per cent, of their payments in certificates of indebtedness, the Treasury announced that government ­ deposits would thereafter be readjusted with respect to those using more or less certificates than this percentage, so as to remain in proportion with the amount of non-credit items actually used, provided that the amount of such deposits should not in any event exceed the cash and certificates used. Beyond this, banks and trust companies duly qualified as depositaries having payments to make on account of subscriptions for $100,000 or more bonds might make payment upon such subscriptions on June 28, 1917, as to any amount not paid in certificates ­ of indebtedness “ by credit on their books to the account of the Treasurer of the United States.” The amounts so credited were to be allowed ­ two per cent, interest by the depositaries subject ­ to withdrawal from time to time when and as required. The Treasury further announced that the limitation of the payment by credit plan to institutions ­ subscribing $100,000 or more was made necessary by the brief time prior to July 2, 1917, for passing upon depositary qualifications, but added that as soon thereafter as practicable the proceeds ­ of the loan would be redeposited with qualified