This civil revision petition is directed against the order of the Appellate Authority made in R.C.A. No.36 of 1989, dated 4. 1991, confirming the order of the District Munsif, Tiruvarur in R.C.O.P. No.28 of 1980, dated 10. 1989. The respondent, Ramadoss was the petitioner in R.C.O.P. No.28 of 1980 before the Rent Controller, Tiruvarur. The revision petitioner was the respondent in the said R.C.O.P. Ramadoss contended in that petition that the revision petitioner Thangavelu was a tenant of a building being premises, bearing door Nos.24-A and 25 in Ward II, Block III, Thanjavur Road, Tiruvarur and situate in T.S. No.593 of an extent of 422 and 1/4 sq.ft. under one Ramanathan Chettiar of Devakottai, on a monthly rent of Rs.7 and that he, Ramadoss had purchased the same along with some other items from that Ramanathan Chettiar by a sale deed, dated 3. 1980. The prayer for eviction was founded on Sec. 10(2)(i) and (vii) of the Tamil Nadu Buildings (Lease and Rent Control) Act, 1960 (hereinafter referred to as the Act.) It was alleged that Ramadoss had a notice issued to the petitioner herein on 16. 1980 to which a reply dated 26. 1980 had been caused to be issued by Thangavelu