COl!rse of trading operation of the Bank or whether it was incidental to any such trading operafa>n. If by virtue of exchange operations profits are made during the course of business and in connection with business transactions, the excess receipts on account of conversion of one currency into another would be revenue receipts. But if the profit by exchange operations comes in, not by way of business of the Bank, the profit would be capital profit. In the B present case, the High Court has found, after an analysis of the relevant facts, that the appreciatfon of the money did not arise in the course of any trading operation. In the year 1949 when there was a devaluation of the Indian rupee, the Karachi branch of the. Bank was not carrying on any business in foreign curren;ies, It has been found by the Appellate Tribunal that until April 3, c 1951 when the Bank was permitted to carry on_ business in Pakistan currency it carried on no foreign exchange business. Even after such permission was granted and even after the Bank obtained on April 25, 1953- a general licence to carry on business in all foreign currencies the money of the head office was not used for any business in foreign currencies. The appellate Tribunal has found that the money was lying idle in the Karachi branch and it was not utiliseq· D in any banking operation and the Karachi branch was merely keeping that money with it for the purpose of remittance to India and awaiting permission of the State Bank of Pakistan. The State Bank of Pakistan granted the permission on July I, 1953 and the remittance actually took place two days later i.e., on July 3, 1953. It has been found by the appellate Tribunal that the sum of money E was at no material time employed, expended or used for any banking operation or for any foreign exchange business. In the supplementary statement of the case the appellate Tribunal stated that "during the period April 3, 1951 to April 25, 1953 there were dealings between India and Pakistan Offices of the Bank, such as opening of letters of credit, issuing of drafts etc.", and "that all these F operations were effected in a new account which was opened and the old balance of Rs. 3,97,221/- could not be utilised as per instructions of the State Bank of Pakistan". According to the agreed statement of the case the amount of Rs. 3,97,221/- was "blocked" and "sterilised" for the period from the devaluation of the Indian rupee upto the time of its remittance to India. In the context of these facts the High Court took the view that the appreciation of the G value of the money did not arise in the course of the trading operation of the Bank and was not therefore taxable as revenue receipt. On behalf of the appellant Mr. Hazarnavis submitted that the appellate Tribunal was wrong in holding that there was blocking or sterilisation of the amount. Learned Counsel said that the balance sheets of the Revenue account of the Karachi branch would show H that the amount of Rs. 3,97,221/- was not lying idle in the Karachi branch but was utilised by it for internal banking operations "within Pakistan. We did not, however, permit Mr. Hazarnavis to produce