Kania, J.- This is an appeal from the judgment of the High Court of Judicature at Patna and relates to the assessment of the assessee to income-tax and super-tax for the year 1939-40. The assessee is the proprietor of the Ramgarh Raj in the district of Hazaribagh in the Chotanagpur Division of the Province of Bihar. The assessment was for the year 1939-40 and the accounting year was 1938-39. The Income-tax Officer completed the assessment on the 14th February, 1940. The assessee appealed to the Appellate Assistant Commissioner. On the 26th May, 1940, the Governor of Bihar acting under section 92(1) of the Government of India Act, 1935, issued a Notification in the following terms: “In exercise of the power conferred by sub-section (1) of section 92 of the Government of India Act, 1935, the Governor of Bihar is pleased to direct that each of the Acts specified in the Schedule shall be deemed to have been applied to the Santal Parganas and the Chotanagpur Division with effect retrospectively from the date on which each of the said Acts came into force in other parts of the Province of Bihar.” SCHEDULE. (1) The Indian Income-tax (Amendment) Act, 1939 (VII of 1939). (2) The Income-tax Law Amendment Act, 1940 (XII of 1940). (3) The Excess Profits Tax Act, 1940 (XV of 1940). (4) The Indian Finance Act, 1940 (XVI of 1940). To remove doubts as to the retrospective applicability of the Indian Finance Act, 1940 and the other Acts mentioned in the Notification, acting under section 92 (2) of the Government of India Act, 1935, the Governor of Bihar made Regulation I of 1941, for the peace and good government of the area in question, lit received the assent of the Governor-General on the 13th of June, 1941, and was published in the Bihar Official Gazette on the 17th of June, 1941. The Regulation was in the following terms: BIHAR REGULATION I OF 1941. The Chotanagpur Division and the Santal Parganas District Validating Regulation, 1941. A REGULATION To remove doubts as to the Operation of certain Acts of the Central Legislature in the partially excluded areas of the Province of Bihar. Whereas it is expedient to remove doubts as to the operation of certain Acts of the Central Legislature in the partially excluded areas of the Province of Bihar. It is hereby enacted as follows:- Short title, extent and commencement. 1. Whereas it is expedient to remove doubts as to the operation of certain Acts of the Central Legislature in the partially excluded areas of the Province of Bihar. It is hereby enacted as follows:- Short title, extent and commencement. 1. (1) This Regulation may be called The Chotanagpur Division and the Santal Parganas District Validating Regulation, 1941. (2) It extends to the Chotanagpur Division and the Santal Parganas District. (3) It shall come into force at once. Operation of Act VII of 1939. 2. (1) Section 1 and Part I of the Indian Income-tax (Amendment) Act, 1939, shall be deemed to have come into force in the area to which the Regulation extends on the 1st day of April, 1939: Provided that sub-clauses (iii) and (iv) of clause (6) of section 2 shall not be deemed to have taken effect earlier than the 1st day of April, 1940. (2) Part II of the Indian Income-tax (Amendment) Act, 1939, shall be deemed to have come into force in the said area on the date appointed by the Central Government for its coming into force throughout British India generally. Operation of Acts XII, XV 26th and XVI of 1940. 3. The Income-tax Law Amendment Act, 1940, the Excess Profits Tax Act, 1940, and the Indian Finance Act, 1940, shall be deemed to have come into force in the area to which this Regulation extends on the day of March, 1940, the 13th day of April, 1940, and the 6th day of April, 1940, retrospectively. The appeal to the Appellate Assistant Commissioner was dismissed on the 3rd March, 1942. The assessee submitted additional grounds of appeal contending, inter alia, that the assessment was ultra vires, as the Indian Finance Act of 1939 was not in operation on the date of the assessment and the Validating Regulation I of 1941 passed by the Governor of Bihar on 13th June, 1941, was ultra vires. As these grounds were submitted after the appeal was ordered to be dismissed they were not taken into consideration by the Appellate Assistant Commissioner. The assessee appealed to the Income-tax Appellate Tribunal where he urged these grounds. In the meantime it was found that in making Regulation I of 1941 the Finance Acts of 1938 and 1939 were not included in the list of Acts extended to these partially excluded areas. The assessee appealed to the Income-tax Appellate Tribunal where he urged these grounds. In the meantime it was found that in making Regulation I of 1941 the Finance Acts of 1938 and 1939 were not included in the list of Acts extended to these partially excluded areas. The Governor of Bihar thereupon, acting under section 92(2) of the Government of India Act, 1935, made Regulation IV of 1942 on 30th June, 1942. It runs as follows:- THE BIHAR GAZETTE. Extraordinary. Published by Authority. Ranchi, Tuesday, July 7, 1942. LEGISLATIVE DEPARTMENT. Notification The 7th July, 1942. No. 133.Leg.-R.-The following Regulation made by the Governor under sub-section (2) of section 92 of the Government of India Act, 1935, has been assented to by the Governor-General on the 30th June, 1942, and is hereby published for general information:- (BIHAR REGULATION IV OF 1942.) The Chotanagpur Division and the Santal Parganas District Validating (Amendment) Regulation, 1942. A Regulation to amend the Chotanagpur Division and Santal Parganas District Validating Regulation, 1941, for a certain purpose. Whereas it is expedient to amend the Chotanagpur Division and the Santal Parganas District Validating Regulation, 1941, for a certain purpose. It is hereby enacted as follows:- Short title and commencement. 1. (1) This Regulation may be called The Chotanagpur Division and the Santal Parganas District Validating (Amendment) Regulation, 1942. (2) It shall come into force at once. Bihar Regulation I of 1941. 2. For section 3 of the Chotanagpur Division and Santal Parganas District Validating Regulation, 1941, the following section shall be substituted and shall be deemed always to have been so substituted, namely, XII of 1940; XV of 1940; XVI of 1940; VII of 1941. 3. The Indian Finance Act, 1938, the Indian Finance Act, 1939, the Income-tax Law Amendment Act, 1940, the Excess Profits Tax Act, 1940, the Indian Finance (No. 2) Act, 1940, and the Indian Finance Act, 1941, shall be deemed to have come into force in the area to which this Regulation extends on the 26th day of March, 1938, the 30th day of March, 1939, the 26th day of March, 1940, the 13th day of April, 1940, the 6th day of April, 1940, the 29th day of November, 1940, and the 31st day of March, 1941, respectively. The appeal was dismissed by the Tribunal on the 31st March, 1943. The appeal was dismissed by the Tribunal on the 31st March, 1943. The appellant’s contention that Regulation I of 1941 and Regulation IV of 1942 were ultra vires the Governor was rejected. On the application of the assessee the Income-tax Appellate Tribunal (Calcutta Branch) under section 66(1) of the Indian Income-tax Act, 1922, submitted the following question for the opinion of the High Court of Judicature at Patna: “Is the assessment made legal and valid in view of the Bihar Validating Regulation I of 1941 and IV of 1942?” In a considered judgment, the High Court answered the question in the affirmative. As the decision involved the construction of various sections of the Government of India Act, the High Court granted a certificate under section 205(1) of the Constitution Act, and the appellant has thereupon come in appeal to this Court. Section 91(1) which only is material in this case, and section 92 of the Constitution Act, run as follows: Excluded areas and partially excluded areas. “91. (1) In this Act the expressions ‘excluded area’ and ‘partially excluded area’ mean respectively such areas as His Majesty may by Order in Council declare to be excluded areas or partially excluded areas. The Secretary of State shall lay the draft of the Order which it is proposed to recommend His Majesty to make under this sub-section before Parliament within six months from the passing of this Act. Administration of excluded areas and partially excluded areas. 92. (1) The executive authority of a Province extends to excluded and partially excluded areas therein, but, notwithstanding anything in this Act, no Act of the Federal Legislature or of the Provincial Legislature shall apply to an excluded area or a partially excluded area, unless the Governor by public notification so directs, and the Governor in giving such a direction with respect to any Act may direct that the Act shall in its application to the area, or to any specified part thereof, have effect subject to such exceptions or modifications as he thinks fit. (2) The Governor may make regulations for the peace and good government of any area in a Province which is for the time being an excluded area, or a partially excluded area, and any regulations so made may repeal or amend any Act of the Federal Legislature or of the Provincial Legislature, or any existing Indian law, which is for the time being applicable to the area in question. Regulations made under this sub-section shall be submitted forthwith to the Governor-General and until assented to by him in his discretion shall have no effect, and the provisions of this Part of this Act with respect to the power of His Majesty to disallow Acts shall apply in relation to any such regulations assented to by the Governor-General as they apply in relation to Acts of a Provincial Legislature assented to by him. (3) The Governor shall, as respects any area in a Province which is for the time being an. excluded area, exercise his functions in his discretion.” Before us the appellant raised contentions about the validity of the Notification issued by the Governor of Bihar on the 26th May, 1940, and Regulation I of 1941 and argued the question of the legislative power of the Governor under section 92 of the Constitution Act. The contentions of the appellant on these points have been discussed fully and rejected by us in our judgment delivered to-day just before this appeal in Civil Appeals Nos. III, IV and V of 19461. We do not therefore deal with the same arguments again. In this appeal a further argument was advanced having regard to the following dates The Income-tax Officer made the assessment order on the 14th February, 1940. Regulation I of 1941 was made by the Governor of Bihar on the 13th of June, 1941 (on which date it received the assent of the Governor-General) and was published in the Bihar Official Gazette on the 17th of June, 1941. At that time the appeal of the appellant was pending before the Appellate Assistant Commissioner That appeal was dismissed on the 3rd of March 1942 Regulation IV of 1942 received the assent of the Governor-General on the 30th June, 1942, and was published in the Bihar Official Gazette on the 7th of July, 1942. This was when the appeal of the appellant was pending before the Income-tax Appellate-Tribunal. This was when the appeal of the appellant was pending before the Income-tax Appellate-Tribunal. That Tribunal dismissed the appeal on the 31st March, 1943. It was argued on behalf of the appellant that Regulation I of 1941 and Regulation IV of 1942, ware ineffective, so far as the appellant was concerned, because his assessment was completed when the Income-tax Officer made the order on the 14th February, 1940. It was argued that at that time the Finance Act of 1939 had not been made applicable to the Chotanagpur Division and therefore the order of the Income-tax Officer was a nullity. It was further argued that the appellant’s appeal to the Appellate Assistant Commissioner was dismissed on 3rd March 1942, and the assessment proceedings thereupon came to an end. The subsequent making of Regulation IV of 1942 by the Governor cannot put life into what was already dead. In our opinion this argument is unsound. The assessment proceedings had’ not come to an end nor were they dead. The appellants had kept the proceedings.alive by filing appeals and the proceedings were thus pending for decision. The right to appeal against orders of assessment by the Income-tax Officer or the Appellate Assistant Commissioner are valuable rights. In The Raleigh Investment Company, Ltd. v. The Governor-General-in-Council1(as yet unreported their Lordships of the Privy Council observed as follows: "The argument for the appellant was that an assessment was not an assessment ‘ made under the Act’ if the assessment gave effect to a provision which was ultra vires the Indian Legislature. In law such a provision, being a nullity, was non-existent. An assessment justifiable in whole or in part by reference to or by such a provision was more aptly described as an assessment not made under the Act than as an assessment made under the Act. The section in question had therefore, it was urged, no application if the impugned provision in the Income-tax Act, 1922, was ultra vires. This construction finds some support in cases decided in India. In construing the section it is pertinent in their Lordships’ opinion to ascertain whether the Act contains machinery which enables an assessee effectively to raise in the Courts the question whether a particular provision of the Income-tax Act bearing on the assessment made is or is not ultra vires. This construction finds some support in cases decided in India. In construing the section it is pertinent in their Lordships’ opinion to ascertain whether the Act contains machinery which enables an assessee effectively to raise in the Courts the question whether a particular provision of the Income-tax Act bearing on the assessment made is or is not ultra vires. The presence of such machinery, though by no means conclusive, marches with a construction of the section which denies an alternative jurisdiction to enquire into the same subject-matter. The absence of such machinery would greatly assist the appellant on the question of construction and, indeed, it may be added that, if there were no such machinery and if the section affected to preclude the High Court in its ordinary civil jurisdiction from considering a point of ultra vires, there would be a serious question whether the opening part of the section, so far as it debarred the question of ultra vires being debated, fell within the competence of the Legislature. In their Lordships’ view it is clear that the Income-tax Act, 1922, as it stood at the relevant date, did give the assessee the right effectively to raise in relation to an assessment made upon him the question whether or not a provision in the Act was ultra vires. Under section 30, an assessee whose only ground of complaint was that effect had been given in the assessment to a provision which he contended was ultra vires might appeal against the assessment. If he were dissatisfied with the decision on appeal-the details relating to the procedure are immaterial-the assessee could ask for a case to be stated on any question of law for the opinion of the High Court and, if his request were refused, he might apply to the High Court for an order requiring a case to be stated and to be referred to the High Court (see section 30 and Secretary of State v. Meyyappa Chettiar2). It cannot be doubted that included in the questions of law which might be raised by a case stated is any question as to the validity of any taxing provision in the Income-tax Act to which effect has been given in the assessment under review. Any decision of the High Court upon that question of law can be reviewed on appeal. Any decision of the High Court upon that question of law can be reviewed on appeal. Effective and appropriate machinery is therefore provided by the Act itself for the review on grounds of law of any assessment. It is in that setting that section 67 has to be construed." These observations clearly show that the right of appeal and the machinery provided in the Income-tax Act to take a question of law for the opinion of the High Court are important provisions which have a bearing on the question whether a certain piece of legislation is ultra vires or not. The fact that an appeal was pending against the assessment is a material fact. When an Appellate Tribunal (whether it is the Assistant Commissioner, or the Tribunal of Appeal, or the High Court, or the Federal Court) decides the appeal it has to do so according to the law then in operation. If pending the litigation or pending the appeal some relevant legislation is enacted by the appropriate legislative authority, the deciding tribunal must give effect to it. In K.G. Mukerjee v. Mt. Ramratan Kuer and others3, the Judicial Committee of the Privy Council had occasion to consider the effect of the Bihar Tenancy Amending Act, 1934, pending an appeal to His Majesty-in-Council. In delivering the judgment of the Board, Sir George Rankin observed as follows: "The first question to which their Lordships have to address themselves is the question whether this Act does not take away from the appellant the right which he is proposing to enforce by bringing this appeal to His Majesty-in-Council." After considering the different sections of the Bengal Tenancy Act of 1885 it was observed as follows:- "In these circumstances it appears to their Lordships that unless some saving can be implied as regards occupancy holdings, which at the date of the commencement of the Act are in question in a pending suit, section 26(N) must be applied to the present case and the plaintiff’s appeal must fail in limine. Their Lordships are of opinion that no such saving can be implied. Section 26(N) is not a provision to the effect that no action shall lie in certain circumstances, nor has it any reference directly to litigation. Their Lordships are of opinion that no such saving can be implied. Section 26(N) is not a provision to the effect that no action shall lie in certain circumstances, nor has it any reference directly to litigation. Its provision is that every person claiming an interest as a landlord shall be deemed to have given his consent to every transfer made before the 1st January, 1923. This is retrospective: the question is not whether general language shall be taken only in a prospective sense ......As substantive rights of landlords and their accrued causes of action were to be abrogated, respect for pending suits over all transfers cannot be assumed." This principle came to be considered by this Court in Lachmeshwar Prasad Shukul and others v. Keshwar Lal Chaudhuri and others1. In that case soon after the decision of the High Court the Bihar Legislature repealed the Money-Lenders Act of 1938 and substantially re-enacted it as Act VII of 1939, taking certain precautions which were required to obviate the objections to the validity of the earlier Act. It was the agreed view of all the Judges that in deciding the appeal they had to take into account legislative changes made since the decision under appeal was given. It was pointed out that this rule of law has been accepted not only in England (Attorney-General v. Birmingham Tame and Rea District Drainage Board2) but also in the United States of America. Once the new legislation is held to have retrospective operation it is clear that the Court of Appeal had to decide the appeal according to the law then prevailing, because the adjudication on the rights of the parties as made by the lower Court was not final. The Court has therefore to consider whether when the Income-tax Appellate Tribunal decided the appeal and when the High Court expressed its view on the question of law submitted for its opinion, the same was according to the law then in operation. The dates mentioned at the commencement of the judgment show that by Regulation IV of 1942, clause 3 of that Regulation was declared"as deemed always to have been substituted" in place of section 3 of Bihar Regulation I of 1941. The dates mentioned at the commencement of the judgment show that by Regulation IV of 1942, clause 3 of that Regulation was declared"as deemed always to have been substituted" in place of section 3 of Bihar Regulation I of 1941. That clause included, inter alia, the Indian Finance Act of 1939 in the Acts which were declared as deemed to have come into force in the areas mentioned therein, on the dates therein specified. As already pointed out in the previous judgment in Civil Appeals Nos. III, IV and V of 19463 the effect of the words "deemed to have been applied" is to treat as if they were in existence, although not so in fact, from the dates mentioned in the Regulation. Giving effect to the words used in the Regulation it is therefore clear that the Finance Act of 1939 was in operation in the partially excluded area of Chotanagpur when the Income-tax Appellate Tribunal and the High Court decided the points put before them. The orders passed by those Tribunals are valid according to the law then in force and the fact that on the date the Income-tax Officer passed the assessment order the Finance Act of 1939 had not been extended to the Chotanagpur Division, is irrelevant. Under the circumstances the appellant’s further contention urged in this appeal fails and the appeal is dismissed with costs. Appeal dismissed.