3. Power to sell to Crown on special terms---The Board of Trustees is
 hereby empowered to release and abandon in favour of the Crown the
 rights of the Board of Trustees to the value of the improvements
 effected by the Wanganui Education Board as lessee of the land referred
 to in the Second and Third Schedules hereto and to accept the sum of
 sixty thousand pounds as the purchase price payable by the Crown for the
 freehold of the said land and the improvements erected thereon.