An act for explaining and amending, An act for the relief of mortgagees, and for the perpetuating the testimony of witnesses, in suits in equity; and for impowering the dean and chapter of the Holy-Trinity or Christ-Church Dublin, to grant to His Majesty for any term of years, the rooms over the room commonly called the exchequer-chamber, and other rooms therein mentioned; and for amending a misnomer in An act to enable Charles Coote, Esq. to raise portions for younger children