c Coming to sub-section (2) of s. 24 on which reliance was placed by learned counsel for the Commissioner, we find that, instead of supporting the interpretation. sought to be put on behalf of the Commissioner on the second proviso to s. 24(1 ), it supports the view which we have arrived at on interpretation of the language of s. 24(1) and its provisos. Clause (1) of s. 24(2) lays down that where D the loss was sustained by an assessee in a business consisting of speculative transactions, it ·shall be set off only against the profits and gains, if any, of any business in speculative transactions carried on by him in that year. This is a general provision which is applicable to loss in speculative· business suffered by any assessee, including a firm, and the limitation that it places is that speculative E ,loss, kept apart under s. 24(1) and not set off against the income, profits and gains of that earlier year, is only to be set off in a subsequent year, if there are profits in speculative transactions of the same business. This provision is also, however, governed by some provisos, including proviso (c) which lays down- that : "nothing herein contained shall entitle any assessee, being a registered firm, to have carried forward and set off any loss which has been F apportioned between the partners, under the proviso to sub-s. (I), or entitle any assessee, being a partner in an unregistered firm which has not been assessed under the provisions of clause (b) of sub-s. (5) of s. 23 to have carried forward and set off against his own income any loss sustained by ti)e firm." This proviso is again divisible into two parts. One par{ relates to the case of G an unregistered firm and lays down an absolute prohibition against setting off of Joss carried forward in the assessment of a partner. of. an unregistered firm, which has been assessed as a separate unit, by omitting to apply the provisions of cl. (b) of sub-s. (5) of s. 23. This part, thus, does not envisage that, in the case of such an unregistered firm, there would be any loss which could be_ apH portioned between the partners. In the case of. a,_registered firm, however, the provision made is in different language. It lays down that "nothing herein contained shall entitle any assessee, being a registered firm, to have carried forward and set off any loss which