Exemption for newly established industrial undertakings: statutory tax relief and eligibility conditions removed by later finance enactment. Section 84 provided an exemption from income-tax for profits of newly established industrial undertakings, hotels and ships up to a specified percentage of capital employed, subject to conditions on formation, use of previously used assets, commencement within a prescribed period, employment or capital thresholds, prescribed amenities for hotels, specified assessment-year application periods, and a power for the Central Government to exclude classes of undertakings by notification; this provision was omitted by finance legislation with effect from 01-04-1968.