Section 26. (2) Where a person carrying on any business, profession or vocation has been succeeded in such capacity by another person, such person and such other person shall, sub ject to the provisions of sub section (4) of section 25, each be assessed in respect of his actual share, if any, of the income, profits and gains of the previous year: Provided that, when the person succeeded in the business, profession or vocation cannot be found, the assessment of the profits of the year, in which the succession took place up to the date of succession, and for the year preceding that year shall be made on the person succeeding him in like manner and to the same amount as it would have been made on the person succeeded or when the tax in respect of the assessment made for either of such years assessed on the person succeeded cannot be recovered from him, it shall be payable by and recoverable from the person succeeding, and such person shall be entitled to recover from the person succeeded the amount of any tax so paid.