Rajasthan Land Revenue Act, 1956–Secs. 75 & 84–Mutation appeal–DIsmissed by the Collector with the view that it was time barred–Respondent no. 2 was having the knowledge of all the sale deeds–Explanation submitted by him for condonation of delay was not satisfactory–Further, the rights of the respondent no. 2 extinguished by virtue of the provisions of Sec. 63(1)(iv) of the Rajasthan Tenancy Act–Further, the BOR misread the notification issued in respect of declaring Meena Community of Ajmer District as Scheduled Tribe –BOR was not justified in exercising the revisional powers–Further held, Addl. Divisional Commissioner was also not justified in remanding back the matter –Impugned orders are liable to be quashed and set aside.