An act (passed 21st March 1799,) for extending the time for returning statements under an act, passed in the present session of Parliament : Intituled, an act to repeal the duties imposed by an act, made in the last session of Parliament, for granting an aid and contribution for the prosecution of the war; and to make more effectual provision for the like purpose, by granting certain duties upon income, in lieu of the said duties; and to amend the said act.