The Incomc·tax Officer issued a notice to the assessee under s. 34 op 1he ground that rwo itc1.1s of 1he assessee's income, namely forest income c and interest income, were not included in the original ac;.sessment for the year 1942-43. In response the assessee filed a return fully di.tclosing his interest income hut raised the plea that his forest income was not tax.able. The Income-tax Officer however. assessed both items to tax. On "l'P""I. the Appellate Tribunal in its order dated April 25. !961, although dealing only with the forest income and holding that the lccome--tax Officer had no jurisdiction to initiate proceedini?S under s. 34 in rcst>CCt of mch D income, by inadvertence or by mistake, set aside the entire order of re-<1ssessmcnt both in re,pect of forest income. as well as the interest income. The Departmeot did oot take any steps to rectify the mistake UDder s. 35 or to have the question of illegality referred to the High Court. Having allowed the order of t~ Tribunal to become final. the Income-tu Officer initiated fresh proceedings uoder s. 34 in reopect of the interest 'income •ind made a revised assessment order which included this income. The Appellate Tribunal confirmed the a=sment but the High Court, on a E reference to it under s. 66(1 ), took the view that fresh proceedings under s. 24 could not be taken for the reason, inter a/ia, that the Tribunal's order dated April 25, 1949 had become final. HELD : The Tribunal had committed a mistake in setting aside the re-assessment order in respect of interest income also, but the income..(ax omcer did not resort to the obvious remedy of haviog the mistake rec:tilled as provided for under s. 35 and allowed the Tribuoal's order dated April F 25, 1949 to become final. He could not in the cir'cum5tances, roopen the assessment by initiating proceedings under !t 34, as othernise theie would he an unrestricted power of re,iew in the hands of the Inoome-tax Officer to go hehiod the findings of a hierarchy of Tribunals and Courts. (995 E-F; 996 F-H] C.l.T. Bombay and Aden v. Khemchand Ramdas, (1938)6 l.T.R. 414 and Cl.T. West Punjab v, Th• Tribunl! Trust, Lahor., (1948) 16 l.T.R. 214, referred to. G R. K. Das & Co. v. r:.I.T., West Bengal, (1956)30 l.T.R. 439 3Jld C.I .. T .. Bihar & Oris.ra v. Maharaja Pratapsingh Bahadur of GidliaMr, (1961) 41 J.T.R. 421. di.:inguished. CML APPELLATE JURISDICTION: Civil Appeal No. 95.; of 1963. On appeal from the judgment and decree da,ted March 9,H 1964, of the Allahabad High Court in Income-ta.X Miscellaneous Case No. 143 of 1954. '