Since all parties acted openly, and there is no ground for denying that every step in their procedure was effectual as between themselves to do what it purported to do, the commissioner's assessment against Bell cannot be supported unless by reference to s. 260 of the Income Tax Assessment Act. That section, so far as its provisions need be considered in this case, provides that "Every contract, agreement, or arrangement made or entered into, orally or in writing, shall so far as it has or purports to have the purpose or effect of in any way, directly or indirectly (c) defeating, evading, or avoiding any duty or liability imposed on any person by this Act be absolutely void, as against the Commissioner, or in regard to any proceeding under this Act, but without prejudice to such validity as it may have in any other respect or for any other purpose". The section is, of course, an annihilating provision only. It has no further or other operation than to eliminate from consideration for tax purposes such contracts, agreements and arrangements as fall within the descriptions it contains. It assists the commissioner, in a case like the present, only if, when all contracts, agreements and arrangements having such a purpose or effect as the section mentions are obliterated, the facts which remain justify the commissioner's assessment. One other general observation should be made. In Jaques v. Federal Commissioner of Taxation [1] , Isaacs J. said of the word "arrangement" that in this collocation it is the third in a descending series, and means an arrangement which is in the nature of a bargain but may not legally or formally amount to a contract or agreement. It must be remembered, however, that the section is concerned only with contracts, agreements and arrangements which have an effect in law and accordingly are capable of statutory avoidance. With this in mind, it may be said that the word "arrangement" is the third in a series which as regards comprehensiveness is an ascending series, and that the word extends beyond contracts and agreements so as to embrace all kinds of concerted action by which persons may arrange their affairs for a particular purpose or so as to produce a particular effect. The case of Jaques v. Federal Commissioner of Taxation [2] itself, and the later case of Clarke v. Federal Commissioner of Taxation [3] , illustrate the application of the word. It is true that, as Isaacs J. observed in the former of these cases (1), the word does not include a conveyance or transfer of property as such; but, as the cases cited show, under the section a conveyance or transfer of property may be void as against the commissioner as being part of a wider course of action which constitutes an arrangement in the relevant sense of the word.