THE PRESENT 57 fore, qualified depositaries were permitted to make payment by credit for certificates allotted to them for themselves and their customers up to an amount for which each should have qualified in excess of existing deposits. Certificates of the four series issued in anticipation of the Fourth Liberty Loan then outstanding were in manner similar to the 1918 procedure made acceptable at par with an adjustment of accrued interest in payment for any certificates of the tax series then offered which should be subscribed for and allotted not later than August 30, 1918. To the extent that this privilege was availed of the new tax series obviously again served as a refunding issue of the earlier maturing loan anticipation series. The offering was pressed with characteristic vigor. Under date of August 16, 1918, a circular letter was addressed by the Secretary of the Treasury ­ apparently to every income and excess profits tax-payer in the country, urging purchase of the certificates both on the score of personal advantage and patriotic service, and concluding with the vigorous ­ appeal: “ The taxpayer who buys these certificates contributes in many ways to help in our great problem of winning the war. First, he pays the Government money before it is clue, receiving interest from the Government meanwhile ­ ; second, he practices economy and thrift and thereby releases goods and services to the Government which are greatly needed for winning the war; third, he saves himself ­ trouble and money and relieves the banking institutions, ­ to which he would otherwise have to turn, from the pressure which his failure to prepare in advance for the payment of his taxes would involve.