furniture dating back to 1820 was moved from library at ickworth house in suffolk earlier this year and replaced with four brown leatherette bean bags .
the move was designed to encourage visitors to ` dwell and take in the atmosphere ' in the room but it provoked fury from heritage expects who branded the move ` misguided ' .
the national trust has replaced antique furniture with beanbags in the library of ickworth house , suffolk .
now it has emerged that similar experiments will take place at nine other of its venues around the country .