In th~ year of acrouut relevant to the aSl!essment year 194243, the assessee received Rs. 9,180{-, but submitted no return -of her income. On July 25, 1949, the Income-tax Ofhcer, on receipt of definite information that such income had escaped assessment, issued a notice -to her under s. 34 of the Indian Income-tax Act, 1922, as amended by the Indian Income-tax and Business Profits Tax (Amendment) Act, 1948. Thereafter, she was assessed on the aforesaid income on October 24, 1949. She challenged the validity of the proceedings under s, 34 initiated on July 25, 1949, on the grounds, that the right to revive the assessment was governed by the provisions of s. 34, before it was amended in 1948, under which the period of limitation - prescribed was four years in the case of a failure to file a return and that this period having expired on March 31, 1947, and the Amending Act of 1948 having come into - force only March 30, 1948, the eight years' period provided therein could not be invoked .. For the Income-tax Authorities, the validity of the notice was sought to be sustained by the additional ground that; in any case, s.' 31 of the Indian Income-tax (Amendment) Act, 1953, validated the notice. ·' -