And be it further enacted by the Authority aforesaid That out of the several Subsidies of Tunnage and Poundage by this Act granted there shall be such and the like Allowances and Abatements in all Cases as are or were prescribed in the like Cases by the said former Act or by the said Book of Rates or the Rules thereunto annexed and to be made and allowed under the same Restrictions and in the same manner and form as are therin expressed.