Expenditure on introducing the Casabalanca conversion system in the spinning plant of the assessee was not allowed as "development rebate" by the Income-tax Officer and the Appellate Commissioner, The Appelc late Tribunal after inspecting the factory and considering the literature an.I Gove,mment notifications, h,eld that the "xpenditu:re, though not admissible as development rebate, was admissible as an allowance for current repairs to the existing machinery under s. lO(i) XV of the Income-tax Act. The High Court, on reference, accepted the Tribunal's finding and held that the Tribunal had jurisdiction to permit the asscssee to raise a new contention which was not raised before the departmental authorities. In appeal by the Commissioner. this Court,