sentences:  In later years, as a result of his being the oldest member of the Lok Sabha he served as pro tem Speaker in 1996, 1998 and 1999.The office of pro tem Speaker is a ceremonial one mainly to conduct the swearing in of the newly elected members.He was a member of the second and third Lok Sabha from 1962 to 1967 representing Calcutta South-West; fourth and fifth Lok Sabha from 1967 to 1977 representing Alipore; seventh and eighth Lok Sabha from 1980 to 1989 representing Basirhat; and ninth to thirteenth Lok Sabha from 1989 till his death representing Midnapore parliamentary constituencies of West Bengal.