A memorial Mass will be offered June 14, 4:30 p.m., at LaSalle Institute, Troy, Troy, for Brother Celsus John Brown, who died May 26. He was 98 and had been a Brother of the Christian Schools for 80 years. A native of Palmer, Mass., he taught at Christian Brothers schools in Rhode Island, Massachusetts, the New York City area and Michigan and was a teacher at LaSalle Institute in Troy in the 1940s-50s and a teacher and vice-principal in a second stint there, 1971-2003.