computed the tax liability of the company in the sum of Rs, 3,60,703-4-0 by an order of assessment dated Indian Copper Corporation Ltd. November 13, 1950, and the company made payment v. of the amount due by it beyond the sums already The State of paid. It would be noticed that this financial year Bihar & Others comprised two periods-(!) before the Constitution, viz., April 1, 1949 to January 25, 1950, and (2) the Ayyangar ]. post.Constitution period from January 26, 1950 to March 31, 1950. There is now no controversy as regards the sales-tax payable in respect of sales effected during the pre-Constitution period. The assessee-company however raised a dispute that in respect of the post-Constitution period, it was not liable to pay any sales-tax in respect of sales to buyers, under which though the property in the goods passed within the State, delivery of the goods was effected outside the State of Bihar for consumption outside that State on the ground that such sales were exempted from tax by Art. 286(l)(a) of the Constitution as it originally stood. It addressed a formal letter to the Commissioner of Commercial Taxes, Bihar, on December 30, 1952, making this demand enclosing a statement showing full particulars of the goods sold, the bill numbers, the date and the amount etc., to enable the refund claimed to be calculated. The assessee-compa.ny followed it up by a formal petition for review of the assessment order by filing a revised return under s. 12(2) of the Bihar Sales-tax Act together with an application for refund. The departmental authorities rejected these applications by order dated July 20, 1953. Further proceedings before the department by way of revision etc. failed to secure to .the assessee-compa.ny the relief which it claimed and thereafter it filed an application under Arts. 226 and 227 of the Constitution before the High Court of Patna praying for the issue of a writ to qua.sh the order of assessment dated November 30, 1950, and the orders rejecting the prayers for review, reassessment and refund and for a direction to the departmental authorities to refund the sum realised by them in so far as the tax related to sales as a result of which goods were delivered outside the State of Biha.r for consumption outside the State of Biha.r.