Summarize the following court judgment. Appeal No. 621 of 1976. Appeal by Special Leave from the Judgment and Order dated 12.1.1976 of the Allahabad High Court in Civil Misc. Writ Petition No. 7183 of 1975	 Appellant in person. V.P. Raman	 Addl. and Girish Chandra	 for respondent No. 1. Yogeshwar Prasad	 Lalji Sinha and Miss Rani Arora	 for respondent No. 5. The Judgment of the Court was delivered by CHANDRACHUD	 J. Respondent 1	 the Union of India	 established the Locomotive Component Works at Varanasi in 1956 for manufacturing component .parts of locomotives. That manufactory merged in 1961 with the Diesel Locomotive Works	 The appellant	 S.K. Chandan	 who was serving with the Westeren Railway as a Chargeman was transferred in 1963 to the Diesel Locomotive Works in the grade of Rs. 375 475 which he was holding at the time of his transfer as a member of the Class III service. The question which arises in this appeal concerns the claim of the appellant to be promoted to Class II service. In 1975 the appellant filed the present writ petition in the Allahabad High Court asking for the writs of Certiorari and Mandamus. We arc now concerned with the grant of the latter writ only by which the appellant prayed	 inter alia	 that respondent 1 be directed to hold selections to Class II service in accordance with the "Advance Correction Slip 70. " This particular prayer was rejected by the High Court by 787 its judgment dated January 12	 1976 on the view that rules contained in Slip 70 did not govern the promotion of Class III employees to Class II. Aggrieved by the aforesaid decision the appellant has filed this appeal by special leave of this Court. The leave is restricted to the ques tion whether the promotion of Class III employees to Class II is governed by Slip 70. Paragraph 105 of the Indian Railway Establishment Code (Vol. I) divides railway services into two categories gazet ted and non gazetted. Services in Classes 1 and II are gazetted whereas those in Classes 111 and IV and the Serv ices of the Workshop Staff are designated as nongazetted. Paragraph 157 of the Code confers on the Railway Board "full powers to make rules of general application to non gazetted railway servants under their control. " Acting in pursuance of this power	 the Railway Board has framed rules which are to be found in the "Indian Railway Establishment Manual." Chapter i of those rules deals with questions relating to recruitment	 training	 confirmation and reemployment. Chapter II which is headed "Rules governing the promotion of subordinate staff ' consists of two sections	 'A ' and 'B '. Section 'A ' deals with "Promotion to Class II posts" while section 'B ' contains "Rules governing the promotion of subordinate staff. Chapter ' III is headed "Rules regulating seniority of non gazetted railway servants." Originally	 Chapter III contained rules 301 to 323. The Advance Correction Slip No. 70	 also issued by the Railway Board in exercise of its powers under Paragraph 157 of the Railway Establishment Code	 substituted a new rule 301 for the existing rule and it introduced five new rules in Chapter III	 namely rules 324 to 328. The contention of the appellant which requires examination in this appeal is that his promotion to Class II is governed by the rules introduced by Slip No. 70 which came into force on March 11	 1973. The appellant	 who argued his own case before us with quite industry and plausibility	 did not dispute that rules 324	 323	 327 328(1) and 328(3) have no application to this case. Rule 326(2) which prescribes deemed dates of trans fers would apply but has been concededly compiled with	 the appellant having no grievance in regard to the fixation of the deemed date of his transfer to the Diesel Locomotive Works. Keeping these provisions apart	 the question boils down to the applicability of rules 301 and 328(2)	 (4) and (5). The appellant 's argument that the rules introduced by Advance Correction Slip 70 govern his right to promotion to Class II is plainly misconceived. In the first place	 the rules introduced by Slip No. 70 were made by the Railway Board in exercise of its powers under Paragraph 157 of the Railway Establishment Code which empowers it to make rules of general application to "Non gazetted railway servants" under its control. Though the Railway Board has the power to make rules governing both gazetted and non gazetted railway servants	 the rules expressed to be made under Paragraph 157 cannot in the very 788 nature Of things be intended to apply to gazetted railway servants or to govern the promotion of non gazetted railway servants to gazetted posts. But this is a small point because if the Railway Board has the power to make rules in regard to both gazetted and non gazetted railway servants	 the signification of a limited source of power cannot whit tle down the effective exercise of that power	 if the rules can reasonably be construed to cover both the gazetted and non gazetted categories. The true reason Why it is impossible to accept the appellant 's contention that his promotion to Class II is governed by the rules introduced by Slip No. 70 is that Chapter II	 section A	 of the Indian Railway Establishment Manual in terms prescribes rules governing the promotion of subordinate staff to Class II posts. The heading of Chap ter II is: "Rules governing the promotion of subordinate staff" and section A of that Chapter bears (he Sub heading "Promotion to Class II posts." Rule 201 which is the first of the Rules occurring in section A of Chapter II	 provides "The following provisions shall apply in respect of promotion of non gazetted class III staff employed on Indian Railways or other Railway administrations to class II posts other than those in Railway Protection Force organization." Rule 202 'prescribes conditions of eligibility	 rule 203 deals with the size of panels of selection	 rule 204 with the constitution of the 'selection boards	 rule 205 with the procedure to 'be adopted by selection boards and rules 206 and 207 with the currency and formation of panels. These seven rules constitute a Code of rules governing the promo tion of the non gazetted Class III staff to Class II posts. other than those in the Railway Protection Force. In view of the fact that the Railway Board has framed these specific rules for the promotion of Class III staff to Class II posts	 it seems to us difficult to accept that the rules introduced by Slip No. 70 would also govern the same subject matter. The Advance Correction Slip No. 70 introduced amendments to Chapter III and not to Chapter II of the Manual. Chapter III deals with rules regulating seniority of non gazetted railway servants and it is in regard to that class of rail way servants .that the Railway Board made new	 provisions through Slip No. 70. The provisions contained in Chapter III	 including the provisions newly introduced by Slip No. 70	 are very clearly designed to govern the seniority and promotion of non gazetted servants within the non gazetted categories of posts. The non gazetted railway service con sists of Class III and IV employees and of the Workshop staff. Within each of these three classes there may be different grades of railway servants and the rules in Chapter III are intended to govern the inter se seniority and the promotion of a railway employee from one category of non gazetted post to another category of a non gazetted post. The 789 rules in Chapter HI cannot therefore govern the promotion of non.gazetted railway servants to gazetted posts. Since the appellant is working as a non gazetted employee in Class III	 his promotion to a gazetted post in Class II would be governed by Chapter II	 section A	 and not by Chapter III of the Railway Establishment Manual. Rule 301 of Chapter III	 as introduced by Slip 70	 provides terms that the rules contained in the particular Chapter lay down general principles that may be followed for determining the seniority of non gazetted railway servants and that rules 324 to 328 of that Chapter shall apply for the purpose of determining the seniority and promotion of non gazetted employees of the Diesel Locomotive Works. The appellant relied very strongly on rule 328(2) which provides that selections and promotions made in the Diesel Locomotive Works from 1 8 1961 to the date on which Slip No. 70 came into force	 namely March 11	 1973	 shall not be valid. He urges that this provision casts an obligation on the Railway Board to recall all promotions made from amongst Class III servants to Class H posts from August 1 1961 to March 	 1973 and that therefore those who are already promoted to gazetted posts ought to be demoted and a fresh panel must be formed for selection to Class II posts from amongst employees working in Class III posts. The infirmity of this argument is that Chapter III applies only to non gazetted servants and to their inter se promotion and therefore the words "promotions made in the Diesel Locomo tive Works" which occur in rule 328(2) must be construed as meaning" promotions made in the Diesel Locomotive Works from one category of non gazetted post to another category of non gazetted post". The same answer would effectively meet the contention of the appellant that the words "promotion to the higher grades" occurring in paragraph 328(4) mean promo tion to a Class II post. The words "promotion to the higher grades" must in the context mean promotion to any of the higher grades in the non gazetted category. Rule 123( '3) of Chapter I	 Section B	 Railway Establishment Manual	 defines "grades" as sub divisions of a class	 each bearing a differ ent scale of pay. If the grievance of the appellant who holds a non gazet ted post in Class III	 at all is or can be that he has not been promoted to Class II	 he must show that the railway administration has violated some provision contained in Chapter II	 section A	 of the Railway Establishment Manual. It is useless and irrelevant for him to show that the provisions of Chapter III introduced by Advance Correction Slip No. 70 have not been complied with by the administra tion. None of the rules introduced by that slip governs the promotion of a Class III employee to a Class II post. The High Court was accordingly right in refusing to issue a writ of mandamus directing the railway administra tion to apply the provisions of Chapter III in the matter of the appellant 's promotion to a Class II post. The appellant has filed a civil miscellaneous petition (7990 of 1976) complaining of adverse entries in his Service record and of the 790 fact that he has been superseded in the matter of promotion. These very grievances were made by him in the High Court but he lost on those points. While granting special leave to appeal	 this Court refused to consider the correctness of the High Court 's findings on those issues. The leave being restricted to the question as regards the application of rules introduced by Advance Correction Slip No. 70. the appellant cannot be permitted to raise questions which must be taken as finally decided under the judgment of the High Court. For these reasons the appeal fails but there will be no order as to costs. S.R. Appeal dismissed.

Chapter 11 of the Indian Railway Establishment Manual deals with "Rules governing the provision of subordinate staff and Section A thereof deals with "promotion to class II posts. " The Railway Board by virtue of its power vested by para 157 of the Indian Railway Establishment Code	 introduced w.e.f. March 11	 1973	 an "Advance Correction Slip No. 70" substituting a new rule 301 and introducing new rules 324 to 328. Chapter III deals with the rules regulat ing seniority of non gazetted Railway servants and the new rule 328(2) provided that selections and promotions made in the Diesel Locomotive Works from August 1	 1961 to March 11	 1973 shall not be valid. The appellant	 a member of the class III service serving with the Western Railway as a chargeman was transferred to the Diesel Locomotive Works in 1963 and was given .the benefits of deemed dates of transfer as provided for in Rule 326(2). The appellant filed a writ petition in the Allahabad High Court praying for a writ of mandamus 	on the strength of the "Advance Correction Slip No. 70" praying for a direction to the respondent to hold selections to class 1I service. The application was rejected holding that the rules contained in Slip No. 70 did not govern the promo tion of class III employees to class Dismissing the appeal by ' special leave the court	 HELD: 'Though the Railway Board has the power to make rules governing both gazetted and non gazetted Railway servants	 the rules expressed to be made under paragraph 157 cannot	 in the. very nature of .things	 be intended to apply to gazetted Railway servants or to govern the promotion of non gazetted Railway servants to gazetted posts. If the Railway Board has the power to make rules in regard to both gazetted and non gazetted Railway servants	 the significa tion of a limited source of power cannot whitle down the effective exercise of that power if the rules can reasonably be construed to cover both the gazetted and non gazetted categories. [787 H	 788 A B] (2) None of the rules introduced by Slip No. 70 govern the promotion of a class III employee to a class II post. The amendments were made to. Chapter III dealing with rules regulating seniority of non gazetted Railway servants. It is in regard to that class of Railway servants that the Railway 786 Board made new provisions. The provisions contained in Chapter III including provisions newly introduced by Slip No. 70	 are very clearly designed to govern the seniority and promotions of non gazetted servants within the non gazetted categories of posts. Chapter 11 Section A of the Manual in terms prescribes rules governing the promotion of subordinate staff to class II post. In view of the fact that the Railway Board has framed seven specific rules in Chapter II for the promotion of class III staff to class ii post	 the contention that the rules introduced by Slip No. 70 would also govern the same subject mater cannot be ac cepted. In the instant case	 since the appellant is working as a non gazetted employee in class III	 his promotion 10 a gazetted post in class 1I would be governed by Chapter II	 Section A and not by Chapter III of the Railway Establish ment Manual. [788 F H	 789 A] (3) The words "promotions made in the Diesel Locomo tive Works" which occur in Rule 328(2) must be construed as meaning 'promotions made in the Diesel Locomotive Works from one category of non gazetted post to another category of non gazetted post. " The words "promotion to the higher grades" occurring in para 328(4) mean promotion to a class II post. The words promotion to the higher grades must	 in the context mean promotion to any of the higher grades in the non gazetted category. The contention that Rule 328(1) casts an obligation on the Railway Board to recall all promotions made from amongst class III servants to class II posts from August 1	 1961 to March 11. 1973 is misplaced. [789 B C]