,958 of Martin & Co., but by the partners of the firm as . . individuals. In April 1927, the Income-tax Officer of 1'"'""1 Singh District I issued a notice to Burn & Co., under s. 22(2) c0 .,,,,;,:;0ne1 of calling for a return of their total income for the year · Income-tax ending March 31, 1927, with a view to assessing them for the year 1927-28. A similar notice was issued by Gajendmgodkar ] ·the Income-tax Officer of District II. 'Vlwn these notices were issued bot.h the officers did not know that the business of Burn & Co., had been bought by the partners of Martin & Co. Subsequently this transaction was brought to the knowledge of the income-tax authorities whereupon Burn & Co.'s file was transferred by the _officer dealing with District II, and in February 1928, an assessment order was made on Martin & Co., in respect of the combined incomes returned by Martin & Co., and Burn & Co., on the footing that the business of Burn & Co., had become a branch of Martin & Co. Martin & Co., appealed against this assessment and their appeal was allowed by the High Court in May 1930. It was held that an income of a registered firm cannot, for the purpose of the Act, be aggregated with the income of an unregistered tirm but that the income of each must be separately assessed irrespective of the fact that the persons interested in the profits of both concerns are the same. In consequence of this decision, the assessment made. on Martin & Co., was amended by the elimination therefrom of the income returned by Burn & Co., and in November 1930, an assessment was made on Burn & Co., on their irrcome as returned by them in January 1928. It was this assessment which was the subject-matter of the appeal before the Privy Council. It would thus be noticed that the principal question which the appellants raised before the Privy Council was : \Vhether the assessment made under s. 23(1) on the appellants in November 1930 for the year 1927-28 was a legal assessment? The argument was that, on a true construction of the Income-tax Act, it was obligatory on the Income-tax Officer to complete the assessment proceedings within the year of assessment, and in the event of such assessment not being so completed the only remedy open to the i~come-tax