Speaking strictly what Mrs. Spence got by her husband's will was not any specific property which had belonged to the partnership but his share or interest in the partnership regarded as a surplus of partnership assets over partnership liabilities. And, of course, she took this as part of his whole estate - that is to say she took all that he had at his death, subject to the payment of debts, funeral and testamentary expenses and of duties arising as a result of his death. For these she, as executrix, was liable. And she, as a partner, had been liable equally with him for the partnership debts. Therefore, as the partnership was solvent and his estate was solvent and she was the sole beneficiary, she could quite properly be said to have by her husband's will become directly entitled in her own right to the entirety of the unsold land. In her husband's lifetime she had only, using the words of Romer J. in Manley v. Sartori [1] , "an unascertained interest in every single asset of the partnership". On her husband's death she became entitled to each asset, including the unsold land, as her own. The price which she got by selling the land was more than the sum for which she and her husband as partners had bought it. Thus it may be said she sold the land at a profit. But that "profit" arose when she sold and not before. I do not think that the words of s. 26 (a) describe what occurred in this case. The joint ventures in land dealing were a profit-making under-taking of the partners. But that undertaking had come to an end. It was not from the carrying out of it that this so-called profit was derived. If any part of it could be said to be assessable income of Mrs. Spence, in my opinion it would be a half only. However the Commissioner did not put his claim on the basis of a half, and no argument was advanced in support of that view. It is true that in her notice of objection Mrs. Spence claimed that "only one half" of the net amounts received by her for land sold after her husband's death was taxable. She thus in effect admitted or conceded that a half was part of her assessable income. But her counsel did not repeat this before me. He simply disputed the proposition on which, on this aspect, the assessment was based. It was that the whole amount which would have been assessable income of the partners had the lands been sold before the death of either of them was assessable income of the survivor. In my opinion the taxpayer must succeed on this issue. However, I do not wish to preclude the Commissioner from issuing a new assessment based on the taxpayer being assessable for half the "profit" arising from sales made after the death of the deceased partner. I do not say that such an assessment would be valid. That proposition was not argued. I therefore express no opinion on it, beyond saying that it may well be correct, although a legal justfication of it is not immediately apparent to me. It would be quite inconsistent with the position the Commissioner took before me, although it would accord with what he said in letters to the taxpayer in 1962. The Commissioner is, of course, not estopped by anything he wrote. But neither is the taxpayer bound by any concession in her notice of objection, especially as in this she was, it seems, accepting what in response to her inquiries the Commissioner had suggested was the position. I say that having regard to the Commissioner's letters of 20th August and 11th December 1962, however the former should be understood. (I should however say that a letter which was apparently sent by the taxpayer on 26th September 1962, was not among those tendered; and I do not know what its terms were.) If the Commissioner, when issuing a new assessment pursuant to my decision, should adopt the position that half of what would have been a partnership profit had the deceased partner not died before the land was sold can now be brought to tax as income of the taxpayer, then I would expect him to inform her of the provision of the Act on which he relies. She would then be in a position to consider whether to object. The Commissioner is not obliged to tell a taxpayer the basis of his assessment; but he is not required to refrain from doing so.