(1) Subject to the provisions of this Act, the total income of any previous year of any person includes all income, profits and gains from whatever source derived which (a). are received or are deemed to be received in the taxable territories in such year by or on behalf of such person, or (b). if such person is resident in the taxable territories during such year, (i). accrue or arise or are deemed to accrue or arise to him in the taxable territories during such year, or (ii) accrue or arise to him without the taxable territories during such year, or (iii).having accrued or arisen to him without the taxable.territories before the beginning of such year and after the 1st day of April, 1933, are brought into or received in the taxable territories by him during such year, or (c). if such person is not resident in the taxable, territories during such year, accrue or arise or are deemed to accrue or arise to him in the taxable territories during such year.