Wherein pursuance of Sections 7(2), 11(10), 26(1) or 31(1), Land aquired

a highway authority or.a Planning Board has acquired any land gotiation to by. direct negotiations with the owner or owners, it shall cause the be subsequ- interests, if any, of other person or persons in such land to be ently aquired acquired under the Land Acquisition Act, 1894, in so far as that yor tand Act may be applicable, to ensure perfect title thereto.