And be it enacted, That upon the Death, Resignation, or Removal of the present principal Officers of the Ordnance, or of any of them, or of any future principal Officers or principal Officer, all such Messuages, Buildings, Castles, Forts, Lines, or other Fortifications, Manors, Lands, Tenements, and Hereditaments respectively shall become vested in and be held by the succeeding principal Officers according to the respective Nature and Quality of the said Messuages, Buildings, Castles, Forts, Lines, or other Fortifications, Manors, Lands, Tenements, and Hereditaments, and the several Estates and Interests of and in the same respectively, in Trust as aforesaid.